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  • Mesencephalon ({{midbrain}}) forms the adult tectum, cerebral peduncle, pretectum and cer ...dal diencephalon as a short-range signal, but also regulates the growth of mesencephalon as a long-range signal."
    8 KB (1,134 words) - 13:19, 25 February 2020

Page text matches

  • - prosencephalon, mesencephalon, metencephalon, myelencephalon, rhombencephalon - telencephalon, diencephalon, metencephalon, mesencephalon, myelencephalon
    2 KB (300 words) - 00:14, 26 August 2009
  • ...es to enlarge, the prosencephalon and rhombencephalon subdivide, while the mesencephalon expands. This gives rise to five secondary brain vesicles: * '''cephalic flexure''' pushes the mesencephalon upwards
    2 KB (203 words) - 00:56, 8 March 2013
  • ...es to enlarge, the prosencephalon and rhombencephalon subdivide, while the mesencephalon expands. This gives rise to five secondary brain vesicles: * '''cephalic flexure''' pushes the mesencephalon upwards
    2 KB (224 words) - 00:57, 8 March 2013
  • ...es to enlarge, the prosencephalon and rhombencephalon subdivide, while the mesencephalon expands. This gives rise to five secondary brain vesicles: * '''cephalic flexure''' pushes the mesencephalon upwards
    2 KB (255 words) - 08:44, 9 July 2014
  • * <font color=darkorange>'''Mesencephalon'''</font>Mesencephalon (midbrain) * Mesencephalon (midbrain)
    3 KB (431 words) - 12:23, 21 May 2017
  • ...cephalon-metencephalon boundary (isthmus) functions as an organizer of the mesencephalon and metencephalon. Fgf8 is accepted as a main organizing molecule of the is * '''Role of Lmx1b and Wnt1 in mesencephalon and metencephalon development'''<ref><pubmed>12399317</pubmed></ref> "The i
    6 KB (853 words) - 21:24, 11 March 2014
  • Mesencephalon ({{midbrain}}) forms the adult tectum, cerebral peduncle, pretectum and cer ...dal diencephalon as a short-range signal, but also regulates the growth of mesencephalon as a long-range signal."
    8 KB (1,134 words) - 13:19, 25 February 2020
  • ...d with the previous stage, the prosencephalon has increased in length, the mesencephalon has remained the same, the rhombencephalon has decreased, and the spinal pa ...n the optic primordium), and also in the rhombencephalon, spinal part, and mesencephalon.
    3 KB (373 words) - 12:06, 21 May 2017
  • ...ic organizer) is a secondary organizer region lying at the junction of the Mesencephalon and Metencephalon. ...cephalon-metencephalon boundary (isthmus) functions as an organizer of the mesencephalon and metencephalon. Fgf8 is accepted as a main organizing molecule of the is
    7 KB (991 words) - 18:16, 25 July 2017
  • ...limitans is detectable in the spinal cord and hindbrain (RhD), and in the mesencephalon and diencephalon, where it extends as far rostrally as the optic sulcus in A marginal layer is appearing in the rhombencephalon and mesencephalon. The first nerve fibres are differentiating, chiefly within the hindbrain (
    3 KB (476 words) - 18:50, 26 May 2018
  • ...dal diencephalon as a short-range signal, but also regulates the growth of mesencephalon as a long-range signal."
    6 KB (828 words) - 10:18, 2 March 2020
  • Mesencephalon ==Mesencephalon==
    10 KB (1,518 words) - 00:40, 25 June 2020
  • '''Modern Notes:''' [[Neural_-_Mesencephalon_Development|Mesencephalon Development]] | [[Neural - Cerebellum Development|Cerebellum Development]] ...logical studies on the mid-brain and cerebellum of vertebrates 1|'''I. The Mesencephalon''']]
    10 KB (1,386 words) - 09:57, 11 February 2018
  • * Mesencephalon (midbrain)
    3 KB (393 words) - 02:13, 8 March 2013
  • * Mesencephalon (midbrain)
    3 KB (396 words) - 02:13, 8 March 2013
  • The junction between the mesencephalon and metencephalon is called the isthmus.
    4 KB (558 words) - 12:43, 24 August 2010
  • ...s known as the dorsal thickening and will be identified as the roof of the mesencephalon, later to give rise to the optic lobes. The primary brain very rapidly deve ...embryos of a comparable stage of development. They are the prosencephalon, mesencephalon, and rhombencephalon.
    17 KB (2,675 words) - 13:45, 14 April 2013
  • # [[C#cranial flexure|cranial flexure]] (cephalic)- pushes mesencephalon upwards
    4 KB (474 words) - 20:51, 12 May 2019
  • ...talis, in mammals the lemniscus. The tract has a wider distribution in the mesencephalon and diencephalon in mammals than in lower vertebrates. All the fibers which ...lemniscus system into two parts is the result of a differentiation in the mesencephalon and diencephalon the main features of which can be outlined, but the detail
    26 KB (4,309 words) - 15:22, 23 February 2020
  • ...m it by a constriction is the mid-brain or mesencephalon. Posterior to the mesencephalon with only a very slight constriction marking the boundary is the hind-brain ...as the infundibulum ([[#Fig019|Fig. 19]]). Therefore, the rhombencephalon, mesencephalon, and that part of the prosencephalon posterior to the infundibulum he immed
    12 KB (2,039 words) - 17:46, 20 March 2012
  • ...one between the prosencephalon and mesencephalon, and the one between the mesencephalon and rhombencephalon. The rhombencephalic neuromeres, however, remain clearl ...osencephalon is subdivided to form the telencephalon and diencephalon. the mesencephalon remains undivided, and the rhombencephalon divides to form the metencephalo
    22 KB (3,544 words) - 10:18, 29 July 2011
  • ...he dorsal horns of the cord with the cerebellum and the dorsal part of the mesencephalon. Indeed, in cyclostomes there is no marked distinction in structure between ...ertain. The latter fibers pass forward and upward to enter the roof of the mesencephalon, forming the tractus bulbo-tectalis.
    25 KB (4,241 words) - 14:07, 23 February 2020
  • ...cervical, the dorsal and the sacral. The cephalic is in the region of the mesencephalon and causes the anterior portion of the brain to be bent at an acute angle t ...quite apparent. The three primary divisions of the brain, prosencephalon, mesencephalon and rhombencephalon, have undergone the following differentiation in the 7.
    52 KB (8,476 words) - 06:54, 26 November 2018
  • ...]] - neocortical fibres project to epithalamus, to dorsal thalamus, and to mesencephalon{{#pmid:2252222|PMID2252222}}
    5 KB (664 words) - 10:02, 18 December 2021
  • # [[C#cranial flexure|cranial flexure]] (cephalic)- pushes mesencephalon upwards
    6 KB (865 words) - 12:19, 18 May 2010
  • - prosencephalon, mesencephalon, metencephalon, myelencephalon, rhombencephalon - telencephalon, diencephalon, metencephalon, mesencephalon, myelencephalon
    22 KB (3,120 words) - 10:01, 16 July 2019
  • ...the diencephalon. The second of the primary brain vesicles remains as the mesencephalon. The hind brain vesicle becomes divided into two portions, the metencephalo i, Cerebral hemisphere ; 2, optic evagination ; 3, diencephalon ; 4, mesencephalon ; 5, metencephalon ; 6, myelencephalon.
    30 KB (4,805 words) - 16:54, 27 October 2018
  • * 3 primary vesicles: '''prosencephalon''' (forebrain), '''mesencephalon''' (midbrain), '''rhombencephalon''' (hindbrain) * '''cephalic flexure''' - pushes mesencephalon upwards
    17 KB (2,341 words) - 13:19, 22 May 2017
  • * '''mes''' - mesencephalon
    6 KB (824 words) - 14:15, 5 October 2011
  • * '''mes''' - mesencephalon
    6 KB (844 words) - 10:51, 1 September 2011
  • Fig. 2 A transverse section through the mesencephalon of a 5-month-old fetus (no. 64) at the level of the main nucleus of the tro Fig. 3 A transverse section through the mesencephalon of a 5-month-old fetus (no. 64) at the level of the caudal division of the
    22 KB (3,609 words) - 15:53, 8 June 2020
  • * '''mes''' - mesencephalon
    7 KB (1,025 words) - 20:56, 12 May 2019
  • ## Mesencephalon
    6 KB (746 words) - 16:16, 2 August 2017
  • * 3 primary vesicles: '''prosencephalon''' (forebrain), '''mesencephalon''' (midbrain), '''rhombencephalon''' (hindbrain) * '''mesencephalon'''
    36 KB (5,144 words) - 18:31, 8 August 2011
  • ...s now cover two-thirds of the diencephalon. The inferior colliculus of the mesencephalon can be discerned (Bartelmez and Dekaban, 1962). Some optic fibers reach the
    6 KB (848 words) - 21:45, 31 January 2019
  • ...human metencephalon, but not until the sixth Week ca11 it be found in the mesencephalon. By 7 weeks, the root and its nucleus have attained most of tlie characteri ...ans and extending rostrally as far as the isthmus between metencephalonand mesencephalon, but no farther. Several fibers descending in this tract emerge from the br
    24 KB (3,849 words) - 17:33, 21 November 2016
  • # [[Neural_-_Mesencephalon_Development|Mesencephalon]] (midbrain, mesomeres) # [[Neural_-_Mesencephalon_Development|Mesencephalon]]
    24 KB (3,183 words) - 09:41, 26 May 2020
  • ...include the posterior commissure, just anterior to the dorsal limit of the mesencephalon. Anterior to this is the epiphyseal recess, and the dorso-mesial saccular o ===The Mesencephalon===
    45 KB (7,127 words) - 19:25, 14 April 2013
  • ...ic sensory impulses and are all differentiated from the dorsal part of the mesencephalon and diencephalon. The centers now to be considered have to do with visceral ...nucleus habenulae and epiphysis. The fourth and fifth neuromeres form the mesencephalon. One of the earliest differentiations of form to appear in the brain segmen
    37 KB (6,037 words) - 15:30, 23 February 2020
  • ...and midbrain one unit; though it is probable that a part, at least, of the mesencephalon was included with the cerebrum, since, upon removing the calvarium and dura ...it was possible to delimit the three early vesicles - the rhombencephalon, mesencephalon, and prosencephalon - the first point to determine was that of landmarks by
    54 KB (8,414 words) - 20:36, 16 August 2017
  • ...al] neocortical fibres project to epithalamus, to dorsal thalamus, and to mesencephalon [http://www.ncbi.nlm.nih.gov/pubmed/2252222 PMID: 2252222]
    10 KB (1,283 words) - 15:30, 18 May 2010
  • ...ene - developmental sinus venosus (aorta), female genitalia, diencephalon, mesencephalon and myelencephalon, nasal capsula, palate, eyelid, and limbs
    7 KB (1,015 words) - 12:02, 19 February 2017
  • * '''mes''' - mesencephalon
    7 KB (981 words) - 07:53, 15 October 2015
  • Mesencephalon and caudal Proencephalon Mesencephalon and Rhombencephalon
    17 KB (2,456 words) - 13:36, 14 September 2009
  • ...man brain regions of fetuses at 16-28 GWs such as medulla oblongata (MdO), mesencephalon (MeE), cerebellum (Cbl), frontal lobe (Fr), ventricular (VZ)/subventricular
    7 KB (1,050 words) - 17:25, 8 June 2020
  • * 3 primary vesicles: '''prosencephalon''' (forebrain), '''mesencephalon''' (midbrain), '''rhombencephalon''' (hindbrain) * '''mesencephalon'''
    41 KB (5,663 words) - 12:05, 4 October 2011
  • ...he brain and are named from behind forward: myelencephalon, metencephalon, mesencephalon, diencephalon and telencephalon (Fig. 2). ...r body in front of the vagal lobes and in front of this is the roof of the mesencephalon. The optic lobes are pushed wide apart by the enormous valvula cerebelli wi
    38 KB (6,387 words) - 23:53, 23 February 2020
  • ...culomotorius, which arises from a ventral motor nucleus in the base of the mesencephalon. It is a noticeable peculiarity in the origin of this nerve that a large pa ...nd more complex course for such impulses is that by way of the roof of the mesencephalon (cf. p. 117). The fibers descending from the tectum form the tractus tectob
    17 KB (2,944 words) - 14:51, 23 February 2020
  • [[Category:Neural]][[Category:Mesencephalon]][[Category:Hearing]][[Category:Vision]]
    7 KB (1,007 words) - 09:57, 14 October 2018
  • ...ee primary brain vesicles — the fore-brain or prosencephalon, mid-braiD or mesencephalon, and hind-brain or rhombencephalon. ...diencephalon (Fig. 332). A dorsal depression separates the latter from the mesencephalon. The lateral wall of the diencephalon is thickened to form the thalamus, th
    44 KB (7,060 words) - 15:51, 13 September 2012
  • * '''mes''' - mesencephalon
    8 KB (1,216 words) - 12:54, 9 September 2016
  • ...neurons to synaptic centers in the inferior colliculi on both sides of the mesencephalon and thence by motor paths to the appropriate local motor fibers at any or a ...fibers arising in the retina of the eye. In the superior colliculi of the mesencephalon these afferent fibers have synapses with association and motor fibers. The
    57 KB (9,105 words) - 19:17, 19 April 2017
  • ...ses from a few lightly stained, bipolar neuroblasts at the junction of the mesencephalon and diencephalon. At its origin it consists of about ten axons coursing cau
    45 KB (6,925 words) - 07:12, 12 February 2017
  • MESENCEPHALON ........ 1547
    8 KB (908 words) - 12:19, 29 June 2020
  • ...third cranial nerve — the motor nerve, of the first cephalic segment. The mesencephalon (crura cerebri) contains the corresponding segment of the neural canal. The The internal geniculate body also belongs to the mid-brain (mesencephalon) ; the pulvinar and external geniculate body, in which the upper division o
    26 KB (4,360 words) - 11:42, 13 February 2014
  • * 3 primary vesicles: '''prosencephalon''' (forebrain), '''mesencephalon''' (midbrain), '''rhombencephalon''' (hindbrain) * '''mesencephalon'''
    24 KB (3,285 words) - 09:53, 9 October 2019
  • ...omotor nerve in mammalian embryos has its anlage in the basal plate of the mesencephalon in the region of the cephalic flexure (Windle, ’32, and Zahajszky, ’40 ...located at the level of the superior colliculus in the rostral part of the mesencephalon. This is just in front of the nucleus of the trochlear nerve. It is formed
    32 KB (5,179 words) - 23:18, 8 June 2020
  • # '''Midbrain''' or Mesencephalon - Tectum
    10 KB (1,485 words) - 07:03, 12 March 2013
  • Mesencephalon and caudal Proencephalon Mesencephalon and Rhombencephalon
    20 KB (2,875 words) - 12:45, 1 September 2010
  • ...sixth inter aomltic groove. The dorsal aortae had no lumina ventral to the mesencephalon. There were lumina between the endothelial layers of the anterior lips of t The anterior cardinal veins were continuous from the mesencephalon to the level of the ganglion of the ninth nerve lying close to the lateral
    85 KB (13,353 words) - 12:19, 4 May 2019
  • Mesencephalon. Thick-walled. Section typically round in shape. Isthmus. Constriction betw ...Associated with optic cup. Section of the brain is round at junction with mesencephalon. It gradually changes to an oval at the level of the optic cups, which are
    45 KB (7,337 words) - 14:24, 9 November 2017
  • ...to the opposite side in the ansulate commissure in the ventral wall of the mesencephalon or in the postoptic decussation, or in both. (4) They go along the lateral
    19 KB (3,294 words) - 14:29, 23 February 2020
  • The posterior boundary of the mesencephalon is marked by the external fissura isthmi, the ventricular sulcus isthmi (fi The diencephalon, mesencephalon, and isthmus have the form of three irregular pyramids oppositely oriented
    25 KB (3,870 words) - 16:57, 28 June 2018
  • Mesencephalon and caudal Proencephalon Mesencephalon and Rhombencephalon
    21 KB (2,991 words) - 11:52, 27 August 2018
  • Mesencephalon Mesencephalon PD, Prosencephalon
    67 KB (10,617 words) - 09:36, 29 March 2019
  • ...ee primary brain vesicles - the fore-brain (prosencephalon) , mid-brain (mesencephalon) , and hind-brain (rhombencephalon). ...c vesicles (Fig. 251). The mid-brain retains its original designation, the mesencephalon . At 7 mm. (five weeks), the neuropores have closed and the hind-brain cons
    56 KB (8,872 words) - 09:52, 25 October 2016
  • ...onnected with afferent or sensory nerves only ; further, the nuclei in the mesencephalon, pons and medulla, with which it is connected, arise from the alar laminae. ==Mid-Brain or Mesencephalon==
    38 KB (6,380 words) - 18:03, 28 December 2014
  • # '''Midbrain''' or Mesencephalon - Tectum
    12 KB (1,757 words) - 06:46, 13 March 2018
  • ...are identifiable in the cerebellum. The area between rhombomere 2 and the mesencephalon increases greatly in length. The mesencephalon still consists of two parts: M2 and M1. Between the two parts, a median but
    20 KB (3,184 words) - 15:30, 26 June 2019
  • ...rse for secondary cutaneous fibers, decussating in the ventral wall of the mesencephalon. Whether they run to the tectum mesencephali or to some other center is not ...tory nucleus and passes diagonally downward and forward to the base of the mesencephalon. In mammals (Fig. 126) it is enormously larger and has made room for itself
    41 KB (6,766 words) - 15:17, 23 February 2020
  • Mesenc., Mesencephalon.
    10 KB (1,600 words) - 16:59, 9 June 2015
  • ...In the normal embryo these parts are pressed in a frontal direction by the mesencephalon and by the pons, which lies very close to the optic chiasma. ...ust have been the lower caudal opening. When we admit a destruction of the mesencephalon and all more caudal nervous structures, the extreme posterior position of t
    44 KB (7,499 words) - 14:52, 31 January 2018
  • ...uble on itself. The axis of the bending being in the mid-brain region, the mesencephalon comes to be the most anteriorly located part of the head and the prosenceph ...ain shows no great change as compared with the last stages considered. The mesencephalon is somewhat enlarged and the constrictions separating it from the diencepha
    26 KB (4,241 words) - 17:35, 20 March 2012
  • ...sinuses are prominent in D. The brain in E shows, from above downward, the mesencephalon, diencephalon, and cerebral hemispheres. Top row, Embryo No. {{CE8092}}. Mi
    10 KB (1,477 words) - 15:31, 26 June 2019
  • ...rain shows three prominent vesicles at the anterior e^, the pros^cephalon, mesencephalon, and rhombencephalon, named in order posteriorly. Behind the !dhom]()ei9^Â ...e the telencephalon at the anterior end, followed by the dicncephalon, the mesencephalon, the metencephalon and the myelencephalon (in the order named). The myclenc
    73 KB (11,809 words) - 14:19, 9 November 2017
  • ...e condition of the brain, the lines of demarcation between prosencephalon, mesencephalon, and rhombencephalon are formed by the exaggeration of certain of the inter ...rly as well as anteriorly, eventually covering the entire diencephalon and mesencephalon under their posterior lobes.
    79 KB (13,044 words) - 17:37, 20 March 2012
  • ...notochord. The rhombencephalon begins at this point. The boundaries of the mesencephalon and rhombencephalon are not easily distinguished in transverse sections. Th The notochord extends forward to the base of the mesencephalon where it turns down very slightly. At the posterior end it joins a mass of
    65 KB (10,480 words) - 14:08, 9 November 2017
  • 3. The Oculomotor Nerve develops from neuroblasts in the basal plate of the mesencephalon (Fig. 260 B). The fibers emerge as small fascicles on the ventral surface o ...rom the chief motor nucleus, a line of cells, extending cranially into the mesencephalon, constitutes a second source of origin for motor fibers. In the adult, the
    29 KB (4,614 words) - 16:36, 24 October 2016
  • ...ypophysis. I., Infundibulum. It., Lamina terminalis. Lop., Optic lobe. M., Mesencephalon. Mt., Metencephalon. opt., Chiasma of the optic nerves, p., Parencephalon. ...re not clearly separated. The transition zone between the diencephalon and mesencephalon is sometimes called the metathalamus.
    64 KB (10,491 words) - 12:13, 23 July 2019
  • {{Mesencephalon}}
    14 KB (1,574 words) - 04:11, 5 July 2022
  • (2) the mesencephalon, or future mid-brain region, and ...cephalic flexure (see Chap. 10). This flexure occurs in the region of the mesencephalon. It is slight in teleost fishes, more marked in amphibia, and pronounced in
    85 KB (13,175 words) - 15:32, 30 August 2017
  • ...ely resembles that of the fourteen somite embryos. The same is true of the mesencephalon (15). The hindbrain is markedly enlarged in its vertical diameter. The pont The neural folds first meet in the region of the future mesencephalon, but their closure is not simply progressive from this point in both direct
    83 KB (13,343 words) - 19:33, 13 March 2019
  • * 3 primary vesicles: '''prosencephalon''' (forebrain), '''mesencephalon''' (midbrain), '''rhombencephalon''' (hindbrain) * '''mesencephalon'''
    36 KB (5,009 words) - 10:18, 27 July 2020
  • '''Modern Notes:''' [[Neural_-_Mesencephalon_Development|Mesencephalon Development]] | [[Neural - Cerebellum Development|Cerebellum Development]] ==I. The Mesencephalon==
    165 KB (26,024 words) - 09:35, 11 February 2018
  • ...to rear are : telencephalon, diencephalon (also called thalamencephalon), mesencephalon, metencephalon, and myelencephalon. The first two divisions together form t The floor, sides, and roof of the mesencephalon are thickened, so that its cavity is reduced and is known as the aqueduct o
    38 KB (6,045 words) - 11:38, 25 April 2015
  • ...hombencephali is a constriction in the embryonic neural tube between the {{mesencephalon}} from the {{rhombencephalon}}. Frazer also wrote on several other embryolo '''Modern Notes:''' {{rhombencephalon}} | {{mesencephalon}} | {{neural}}
    36 KB (6,122 words) - 09:56, 30 March 2020
  • R
    ...es:''' [[P#prosencephalon|prosencephalon]] (forebrain) - [[M#mesencephalon|mesencephalon]] (midbrain) - [[R#rhombencephalon|rhombencephalon]] (hindbrain)
    24 KB (3,306 words) - 21:57, 16 July 2020
  • ...ree of development; a typical three-part brain composed of prosencephalon, mesencephalon and myelencephalon was visible, as well as a short neural tube bordered by ...ting heart primordia lay on either side of the embryo in the region of the mesencephalon. Considerable outwandering of cells was visible around the periphery of the
    32 KB (5,112 words) - 11:52, 6 February 2020
  • ...urved sharply (Fig. 366). The cephalic flexure forms an acute angle at the mesencephalon, and there is also a marked cervical flexure. As a result, the head is some ...oculomotor nerve is just beginning to appear from the ventral wall of the mesencephalon. Ventrodateral to the metencephalon and myelencephalon occur in order: the
    96 KB (15,815 words) - 16:23, 24 October 2016
  • ...tectum opticum and the nucleus of the tractus habenulo-peduncularis in the mesencephalon, the nucleus habenulae, the nucleus of the posterior commissure and the inf
    16 KB (2,658 words) - 15:06, 23 February 2020
  • ...head and tail regions close together (Fig. 93). The cephalk flexure at the mesencephalon forms an acute angle and there is a marked neck or cervical flexure. As a r ...shown. The oculomotor nerve begins to appear from the ventral wall of the mesencephalon.
    76 KB (12,610 words) - 13:38, 13 September 2012
  • ...s begin to fuse together at a point which later falls in the region of the mesencephalon or farther caudally, and the fusion continues forward and backward until a ...s entirely absent for a short distance. The second is that in front of the mesencephalon the crest is either very small or so modified that it can not be readily co
    73 KB (12,143 words) - 23:48, 23 February 2020
  • ...aneous nuclei, and see its relations in the mesencephalon. The roof of the mesencephalon in the fishes begins to show a differentiation into two parts, a median som
    32 KB (5,463 words) - 14:16, 23 February 2020
  • ...ior region identify forebrain {prosencephalon), optic vesicles, mid-brain {mesencephalon), hind-brain {rhombencephalon). The secondary subdivisions of the hind-brai ...the rhombencephalon likewise two {metencephalon and myelencephalon) : the mesencephalon is undivided.
    91 KB (15,049 words) - 17:55, 17 November 2019
  • ...3 primary brain vesicles are formed; forebrain (prosencephalon) midbrain (mesencephalon), and hindbrain (rhombencephalon){{#pmid:22237006|PMID22237006}} *Mesencephalon does not further develop into a secondary brain vesicle
    59 KB (8,406 words) - 14:30, 16 July 2018
  • ...m (Univ. of Mich, Coll. EH 16) showing overgrowth of neural epithelium. A. Mesencephalon, diencephalon, and one of the eyes. B. Spinal cord in thoracie region. C. E
    16 KB (2,535 words) - 12:24, 16 January 2020
  • M
    ===mesencephalon=== ..._vesicle|primary brain vesicle]] (there are 3 primary brain vesicles). The mesencephalon lumen (cavity of the neural tube) will form the midbrain aqueduct.
    84 KB (11,320 words) - 22:49, 3 June 2019
  • T
    ...alon|telencephalon]] - [[D#diencephalon|diencephalon]] - [[M#mesencephalon|mesencephalon]] - [[M#metencephalon|metencephalon]] - [[M#myelencephalon|myelencephalon]] ...es:''' [[P#prosencephalon|prosencephalon]] (forebrain) - [[M#mesencephalon|mesencephalon]] (midbrain) - [[R#rhombencephalon|rhombencephalon]] (hindbrain)
    51 KB (6,762 words) - 08:45, 14 November 2019
  • ...phalon. The factors leading to flexure are believed to be intrinsic to the mesencephalon. The four divisions (A, B, C, D) of the rhombencephalic folds, first seen i From stage 9 to stage 10 the prosencephalon increases in length, the mesencephalon remains the same, and the rhombencephalon decreases considerably. A correla
    30 KB (4,523 words) - 15:25, 26 June 2019
  • ...prosencephalon has divided to form the telencephalon and diencephalon; the mesencephalon has remained undivided; and the rhombencephalon has become differentiated i The mesencephalon shows little change from its condition in younger embryos. Its demarcation
    51 KB (8,059 words) - 19:08, 19 April 2017
  • ...ellar primordium in width and height deepens the groove between it and the mesencephalon. A well-pronounced isthmus rhombencephali is evident. The mesencephalon still comprises two parts, and the button-like formation visible in stage 1
    32 KB (5,235 words) - 21:54, 31 January 2019
  • ...Hween-brain (Fig. 232, /). The middle vesicle is bodily converted into the mesencephalon or mid-brain (m), but the posterior vesicle differentiates so that three pa h, Hemisphere; i, isthmus; m, mesencephalon; mf, mid-brain flexure; mt, metencephalon ; myl, myelencephalon; nf, nape f
    90 KB (14,655 words) - 08:54, 17 June 2016
  • *Midbrain/Mesencephalon *Mesencephalon: undivided
    56 KB (8,168 words) - 08:15, 27 October 2017
  • ...-brain, mid-brain, and hind-brain, or more technically, as prosencephalon^ mesencephalon^ and rhombencephalon. The prosencephalon is the broadest of the three divis ...om the rhombencephalon which lies posterior to it. In this early stage the mesencephalon shows no indication of local specialization presaging the formation of spec
    49 KB (7,909 words) - 18:57, 19 April 2017
  • ...ayer. The sulcus limitans proceeds from the rhombencephalon throughout the mesencephalon. In the midbrain two parts can still be distinguished; the marginal layer c ...n subdivisions of the brain, it has been seen that (l) the prosencephalon, mesencephalon, and rhombencephalon can be distinguished as regions in the completely open
    32 KB (5,078 words) - 15:26, 31 January 2019
  • Because the mesencephalon is the site of a remarkable series of changes in the shape of the brain in
    17 KB (2,642 words) - 08:17, 29 June 2018
  • The outlines between the mesencephalon, thalamencephalon and prosencephalon are easily made out, and correspond cl ...a group of neuroblasts forming the ventral part of the mantle layer in the mesencephalon. These neuroblasts converge to form small rootlets which pass through the g
    42 KB (7,064 words) - 03:56, 19 February 2020
  • ...ephalon) is characterized by the outgrowing optic vesicles. The mid-brain (mesencephalon) is a simple dilatation. The elongate hind-brain (rhombencephalon) graduall ...tion is thus just caudad of the first aortic arches. The caudal end of the mesencephalon is the portion of the neural tube showing; it is thick walled, with an oval
    69 KB (11,122 words) - 16:31, 24 October 2016
  • ...He further states that transverse divisions, such as the diencephalon and mesencephalon, are not ' natural regions' because the primary metamerism has ceased to be ...ds between the fourth and third ventricles, "and Bensley ('10) writes: The mesencephalon is noteworthy in a mammal as lacking a ventricle. Its cavity is a narrow ca
    54 KB (8,918 words) - 09:29, 8 April 2020
  • ...al corrugations appear in the region representing the diencephalon and the mesencephalon; and the same number appear anterior to the occipital somite. The fact that
    16 KB (2,510 words) - 22:55, 21 February 2020
  • ...he medulla oblongata, another group begins to be laid down in front of the mesencephalon. FiberS from this source descend to the lower part of the brain stem withou ...Fig. 64) decerebrated by sectioning the brain at the rostral border of the mesencephalon.39 The increase in muscle tonus under asphyxial conditions may be interpret
    31 KB (5,053 words) - 10:19, 10 September 2018
  • ...o primary right and left halves, a floor-plate is lacking, as such, in the mesencephalon and diencephalon. The floor-plate would then be recognized as extending thr ...divided the brain into epichordal and prechordal parts,3 but includes the mesencephalon in the epichordal brain, and the reason for this is obvious; to the midbrai
    45 KB (7,027 words) - 18:17, 17 May 2020
  • ...s System of Vertebrates (1907) 16|Chapter XVI. Centers of Correlation. The Mesencephalon and Diencephalon]] 127. Outline transverse sections through the mesencephalon of a cyclostome, a 'selachian, a ganoid, a bony fish, an amphibian and a ma
    35 KB (5,473 words) - 21:41, 23 February 2020
  • ...segment of the posterior cerebral artery (PCA), reflecting flexure of the mesencephalon and diencephalon at this stage. Variations were observed in 17 of 20 sample
    17 KB (2,413 words) - 06:56, 10 December 2019
  • ...xure of the floor between the mid-brain and the hind-brain. The floor of the mesencephalon is thickened at its cephalic end. The trigeminal ganglion is present as a d
    19 KB (3,140 words) - 18:43, 23 June 2019
  • ...vestibular part. The sulcus limitans terminates at the rostral end of the mesencephalon and hence does not continue into the diencephalon. Several afferent tracts
    38 KB (6,124 words) - 15:28, 26 June 2019
  • ...by the third cranial nerve — which is the motor nerve of that segment. The mesencephalon (crura cerebri) contains the corresponding segment of the neural tube. The # The walls of the 3rd ventricle (thalamencephalon) and mid-brain (mesencephalon), in which the terminal nuclei of the optic fibres are developed.
    44 KB (7,390 words) - 00:02, 31 December 2014
  • ...goes to the corpus interpedunculare and adjacent nuclei in the base of the mesencephalon, from which further connections with motor nuclei are made. See Figure 101
    22 KB (3,543 words) - 14:47, 23 February 2020
  • 127. Outline transverse sections through the mesencephalon of a cyclostome, a 'selachian, a ganoid, a bony fish, an amphibian and a ma
    19 KB (2,948 words) - 23:22, 23 February 2020
  • ...ruction of the configurations of the nuclei forming the medial wall of the mesencephalon and diencephalon and the medial external wall of the anterior portion of th ...but thicker in the mesencephalon and diencephalon. The floor plates of the mesencephalon and rhombencephalon show their characteristic thickening and the pontine fl
    205 KB (32,873 words) - 16:51, 21 August 2018
  • 3. The Oculomotor Nerve originates from n^ ^ in t the mesencephalon (Fig. 339 B). The fibers em( * small iaes ventral surface of the mid-brain ...om 1 the chief motor nucleus, a line of cells extending cranially into the mesencephalon . constitutes a second source of origin for motor fibers. In the adult, the
    71 KB (11,662 words) - 06:49, 9 February 2017
  • ...ally a bidirectional process: it continues from the rhombencephalon to the mesencephalon and proceeds from the optic chiasma toward the roof of D1, thereby forming The most uncertain part to identify precisely is the mesencephalon (tectum and tegmentum in fig. 11-9) because its delineation toward both the
    43 KB (6,800 words) - 15:26, 26 June 2019
  • ...halon) is characU'lizt-d by the outttrowing optic \esicies. The mid-brain (mesencephalon) is uinlilTrn-tiliattxl. The hind-briiiti (rhonil>eiicephalon') is elongate mesencephalon which is here thick walled undifferentiated mescnchynie in the sectioi by t
    52 KB (8,423 words) - 13:11, 13 September 2012
  • ** Mesencephalon ...n plates 1 and 4, By the cephalic flexure (Flexxeph.) which occurs in the mesencephalon (Mesen.) the fore-brain is bent at an acute angle to the hindbrain. The ce
    150 KB (24,075 words) - 13:23, 21 May 2017
  • ...teriorly. The brain shows very distinctly the three parts, prosencephalon, mesencephalon, and rhombencephalon, separated by grooves (Plate I.). There is no demarcat
    23 KB (3,781 words) - 03:58, 19 February 2020
  • F
    ...sencephalon|prosencephalon]]) - [[M#midbrain|midbrain]] ([[M#mesencephalon|mesencephalon]]) - [[H#hindbrain|hindbrain]] ([[R#rhombencephalon|rhombencephalon]])
    40 KB (5,544 words) - 08:47, 13 July 2020
  • ...nsidered as internal marks of the isthmus (Herrick) or are assigned to the mesencephalon (Neal) as their position seems to indicate, need not be discussed here. At ...eing the complexity of ventricular grooves present in the diencephalon and mesencephalon, I would not be willing to say that this slender ependymal groove throughou
    101 KB (16,540 words) - 12:56, 4 February 2017
  • ...ges, fissura rhombo-mesencephalica lies where the thin" caudal wall of the Mesencephalon passes into the Valvula cerebelli, the boundary between the Mes- and Metenc
    29 KB (4,633 words) - 09:54, 11 February 2018
  • (4) Cerebral aqueduct (of Sylvius). The mid-brain (mesencephalon) remains undivided; its primitive cavity becomes this narrow canal connecti d. Mesencephalon. This is the least-modified portion of the primitive brain tube.
    96 KB (15,431 words) - 13:37, 4 January 2018
  • ...prosencephalon is the diencephalon. Very little change has occurred in the mesencephalon. Hardly any expansion occurs in the region between the hindbrain and the mi 10 Dorsal -View of late fifteen-day embryo. X 10. MC, mesencephalon; H0, rhombencephalon; V17, vitelline vein.
    44 KB (6,780 words) - 10:54, 12 May 2018
  • .... Fl., Cranial flexure. D. C, Duct of Cuvier. Dienc, Diencephalon. Mesenc, Mesencephalon. Metenc, Metencephalon. Myelenc. 1, and 2, Anterior and posterior divisions ===The Mesencephalon===
    138 KB (22,706 words) - 12:04, 23 July 2019
  • ...om their anterior end, in about the position in which the division between mesencephalon and rhomhencephalon will develop later. Towards their anterior end the fold ...cephalon and rhombencephalon are marked off by definite constrictions-—tl1e mesencephalon being particularly prominent at the bend of the head. The greater part of t
    110 KB (18,917 words) - 18:47, 26 June 2018
  • ...s being centrifugal, these arising in connection with the diencephalon and mesencephalon.
    69 KB (11,301 words) - 20:22, 30 June 2020
  • ...ies the forebrain and arises from neural crest cells derived from midbrain(mesencephalon) and forebrain(prosencephalon)<ref name="PMID21882426">Treloar HB, Miller A - 5 to 10 somite stage: Anterior portion of the mesencephalon continued producing crest cells for migration to the frontonasal mass.<ref
    54 KB (7,676 words) - 18:32, 5 October 2012
  • ...ociate the future history of the prosencephalon with that of the nose, the mesencephalon with that of the eye, and the rhombencephalon with that of the ear. ...nial nerves depart. The third and fourth cranial nerves originate from the mesencephalon. Its cavity is the mesocoel (or aqueduct).
    152 KB (24,186 words) - 09:38, 29 March 2019
  • ...ens in which the brain has been cut through from the rostral border of the mesencephalon to the rostral border of the pons. When the level of the transection passes
    20 KB (3,289 words) - 09:43, 10 September 2018
  • :ventricle of mesencephalon (mesocoel) becomes aqueduct of Sylvius, connecting with cavities of optic l :caudal region of brain which later forms mesencephalon and rhombencephalon.
    100 KB (14,309 words) - 08:45, 7 April 2013
  • and the mesencephalon. It is, probably, that portion of the crest which will be
    28 KB (4,566 words) - 18:51, 25 June 2020
  • mesencephalon. In mammals it contributes fibers to the dorsal longitudinal fasciculus of
    30 KB (4,627 words) - 17:37, 28 June 2018
  • mesencephalon by a deep groove. Broad in front and in the region of the optic ...iately behind it. In marked contrast to this is the much longer and larger mesencephalon of the Robert Meyer embryo, as modeled by Thompson'^ Somewhat similar to it
    134 KB (21,682 words) - 14:15, 5 May 2019
  • * '''β-catenin is required in the neural crest and mesencephalon for pituitary gland organogenesis'''{{#pmid:27184910|PMID27184910}} "The pi
    28 KB (3,736 words) - 09:54, 21 September 2023
  • ...e cerebellum which projects into and largely fills up the ventricle of the mesencephalon, the valvula cerebelli. In selachians no valvula is present. The cerebellum
    31 KB (5,202 words) - 14:39, 23 February 2020
  • ...ventralis cephalica; Me., mesencephalon; P, pharynx; PI. mc, plexus on the mesencephalon. ...orta with the v. cardinalis lateralis and which will form an artery of the mesencephalon but were not injected because they are still solid; A. si., a. subintestina
    214 KB (36,966 words) - 08:54, 10 June 2020
  • ...continued into the tectal commissure. The curious fold of the roof of the mesencephalon in the cephalad direction which includes the mesocoelic recess occurs very
    33 KB (5,295 words) - 09:50, 5 February 2020
  • ...tricle, continuous with a deeper groove in the wall of the cord and of the mesencephalon. ...brain, due in part to the acceleration in growth of the diencephalon. The mesencephalon is separated from the rhombencephalon by a marked constriction of the total
    167 KB (26,399 words) - 10:22, 27 June 2018
  • ...of somites, cp, Posterior limit of prosencephalon; fr, posterior limit of mesencephalon; ps, primitive streak; u, first somite; 1-11, neuromeres. ...encephalon, or bet ween- brain. Then following the undivided mid-brain, or mesencephalon, come the two divisions of the primary hind-brain, or rhombencephalon; the
    125 KB (20,061 words) - 19:36, 27 August 2013
  • ====II. Mesencephalon==== ...7, B, C). In the case of the 24.—somite embryo of Johnson (’17), both the ‘mesencephalon’ and a segment in front of it without any name (his fig. 1, pl. 2) probab
    110 KB (17,980 words) - 12:25, 30 October 2018
  • ...ain, the persisting portion of which is the diencepkalon. The mid-brain or mesencephalon, located at the cephalic flexure, is not subdivided. The hindbrain, or rhom
    31 KB (5,331 words) - 08:00, 24 November 2018
  • of the mesencephalon. In cyclostomes the middle part of the mesencephalic tectum is a membranous
    38 KB (5,790 words) - 16:39, 28 June 2018
  • Prosencephalon or Fore-brain. Mesencephalon or Mid-brain. Rhombencephalon or Hind-brain. ...ephalon are the telencephalon and he thalamencephalon or diencephalon; the mesencephalon remains mdivided; and the subdivisions of the rhombencephalon are the metnc
    540 KB (87,878 words) - 10:06, 11 July 2020
  • D
    ...alon|telencephalon]] - [[D#diencephalon|diencephalon]] - [[M#mesencephalon|mesencephalon]] - [[M#metencephalon|metencephalon]] - [[M#myelencephalon|myelencephalon]]
    54 KB (7,325 words) - 08:48, 23 October 2018
  • ...the midbrain in ‘DuGa.’ Associated, no doubt, with the rapid growth of the mesencephalon is the more obtuse cranial flexure in this specimen. figure 4 shows the ne
    31 KB (4,932 words) - 18:44, 23 June 2019
  • ...nnerer Kleinhirnwulst of Hochsetter) is present as a clear thickening. The mesencephalon now possesses an intermediate layer throughout most of its extent. The post
    29 KB (4,624 words) - 21:51, 31 January 2019
  • ...tuberculum posterius behind the dorsal thickening, marks the limit between mesencephalon and the primary hind-brain or rhombencephalon. The beginning of the rhomben ...ral hemispheres (tekncephalori) and the between-brain (diencephalon) : the mesencephalon forms the region of the optic lobes and chiasma: the rhombencephalon forms
    181 KB (28,927 words) - 14:55, 31 January 2019
  • ...s or Eclm'dua,'instead of in the rabbit (Lmus). The lateral surface of the mesencephalon or tegmentum is directly continuous with the large swelling of the tubcmulu ...uintvl, that is, in the deep groove which separates this swelling from the mesencephalon. But, in order to reach the surface, it proceeds around the mesial border o
    77 KB (12,801 words) - 12:10, 30 April 2020
  • ...other constriction appears marking the posterior limit of the mid-brain or mesencephalon. The third section of the brain, the hind-brain or rhombencephalon is much ....FL, cranial flexure; D.C., ductus Cuvieri; Dienc., diencephalon; Mesenc., mesencephalon; Metenc., metencephalon; Myelenc. 1, and 2, anterior and posterior division
    118 KB (19,199 words) - 19:32, 27 August 2013
  • ...ars later the epiphysis. The other two (iv and v) obviously enter into the mesencephalon. In se1achians these two segments have connected with them respectively the Herrick’s revision of the nomenclature of the diencephalon and mesencephalon contains two new terms, ophthalmencephalon, and medithalamus. As a pedogogi
    139 KB (22,667 words) - 21:51, 6 February 2017
  • The mid-brain or mesencephalon is tubular and curves on itself to join the isthmus. Viewed from the latera
    36 KB (6,085 words) - 16:35, 22 January 2019
  • Fibres in central grey of mesencephalon yO
    35 KB (5,360 words) - 17:38, 15 March 2020
  • ...he end of a small blunt needle. Care must be exercised in working over the mesencephalon and telencephalon of the brain not to injure the brain wall, which may be b
    34 KB (5,792 words) - 15:57, 13 September 2012
  • ...medulla oblongata is developed. Owing to the tendency to metamerism of the mesencephalon and the rhombencephalon and their conformity with the type seen in the spin ...nct constrictions in the brain wall, subdividing it into a prosencephalon, mesencephalon, and rhombencephalon. These are best seen in Fig. 25, which is from the sam
    180 KB (28,885 words) - 09:59, 15 May 2020
  • ...en the paraphysis in front and the posterior commissure of the midbrain or mesencephalon behind. These structures are seen in their simplest form in the embryos of
    42 KB (6,843 words) - 14:19, 8 August 2020
  • ...ining parts of the hypothalamus and ventral thalamus. The remainder of the mesencephalon and diencephalon (including the retina) and the whole of the telencephalon
    36 KB (5,542 words) - 17:13, 28 June 2018
  • S
    ...alon|telencephalon]] - [[D#diencephalon|diencephalon]] - [[M#mesencephalon|mesencephalon]] - [[M#metencephalon|metencephalon]] - [[M#myeloncephalon|myeloncephalon]] ...xtends the entire length of the spinal cord and continues through into the mesencephalon.
    97 KB (13,191 words) - 11:51, 5 May 2019
  • ...G.IX-X, ganglionic crest of the glossopharyngeal and vagus ganglia ; Xe., mesencephalon; 0t.pZ., otic placode ; ah., rhombomere ; R.n.c., rostral neural crest, 8.1 ...nterior to the level of the fourth somite, gaping most widely in region of mesencephalon and rliombomere A,. The position of the ventral lip of the neuropore is mar
    248 KB (40,364 words) - 14:58, 30 October 2018
  • ...e sulcus limitans, which at this time continues into the diencephalon. The mesencephalon has grown considerably and comprises two segments (M1, M2).
    41 KB (6,572 words) - 15:28, 26 June 2019
  • ...cup—shaped nucleus, there were no efferent fibres to the cortex nor to the mesencephalon; that the efferent fibres all ran to the other nuclei of the thalamus, thos
    56 KB (9,573 words) - 12:13, 12 April 2020
  • ...ted as /«»<'-fcrfn'/i {Vorderhirn, prosencephalon), mid-brain {Mittelhini, mesencephalon), and hind-brain (77iM/e?7K'rH,metecephalon), respectively. The first vesic
    48 KB (8,040 words) - 23:23, 25 June 2015
  • P
    ...es:''' [[P#prosencephalon|prosencephalon]] (forebrain) - [[M#mesencephalon|mesencephalon]] (midbrain) - [[R#rhombencephalon|rhombencephalon]] (hindbrain) ...es:''' [[P#prosencephalon|prosencephalon]] (forebrain) - [[M#mesencephalon|mesencephalon]] (midbrain) - [[R#rhombencephalon|rhombencephalon]] (hindbrain)
    127 KB (17,112 words) - 12:46, 31 May 2019
  • C
    :A narrow ventricular cavity within the mesencephalon formed from the cavity within the neural tube. ...cervical flexure|cervical flexure]])), lying between the [[M#mesencephalon|mesencephalon]] and [[P#prosencephalon|prosencephalon]], of the three [[F#flexure|flexure
    102 KB (13,753 words) - 16:21, 18 June 2019
  • .... II2, p. 183, Fig. 187.) Xca. 50. au, opiio vesicle; e, telencephalon; m, mesencephalon; z, diencephalon. ...a. 37. he, cerebral vesicle; in, infundibulum; ma, mammillary process; mi, mesencephalon; op, torus opticus; t, lamina ferminalis; zw, diencephalon.
    115 KB (18,452 words) - 07:53, 10 November 2018
  • ...sions of unequal length, viz., the fore-brain (prosencephalon), mid-brain {mesencephalon), and hind-brain (rhombencephalon). The first division is characterized in
    58 KB (9,692 words) - 12:03, 23 July 2019
  • ...poral pole, but by the end of the 3rd month, the expansion has reached the mesencephalon, and now there has appeared a third or occipital pole (Fig. 107, B) ; by th
    58 KB (9,394 words) - 17:29, 29 December 2014
  • ...eek 5, neural tube differentiates into the prosencephalon (forebrain), the mesencephalon (midbrain) and the rhombencephalon (hindbrain). By week 7, the prosencephal
    45 KB (6,542 words) - 09:48, 13 May 2020
  • M., mesencephalon
    61 KB (10,341 words) - 02:57, 29 June 2020
  • ...ansverse bridge of nerve fibres, the habenular commissure. The roof of the mesencephalon, which lies close behind the pineal organ, becomes slightly thickened on ea
    49 KB (8,022 words) - 21:39, 7 August 2020
  • ...rt of the brain, the roof of which is thus marked off, is the mid-brain or mesencephalon. Its floor is the middle projecting part of the ventral cephalic fold. The ...he three primary brain expansions.''' von Kupffer. P.. prosencephalon; M., mesencephalon; R., rhombencephalon ; Ms., spinal cord; cw., chiasma eminence; J., infundi
    236 KB (37,226 words) - 11:10, 25 January 2024
  • 1, Cerebral hemisphere, prosencephalon ; 2, thalamencephalon ; 3, mesencephalon, still single ; 4, cerebellum, epencephalon ; 5, mj-elencephalon, medulla o ...fundibulum at the lower part of the same ; m, the middle ^jrimary vesicle (mesencephalon) ; c, the cerebellum (epencephalou) ; m 0, the medulla oblongata. Figure 3
    77 KB (12,673 words) - 21:43, 14 March 2015
  • ...phalic structure, and here none of the interpeduncular nucleus lies in the mesencephalon. Since this nucleus, however, is so obviously homologous with the structure
    52 KB (7,861 words) - 08:06, 29 June 2018
  • the neural folds first meet in the region of the future mesencephalon but the closure is not simply progressive from this point in both direction ...rograde. It is impossible to regard a point located at the junction of the mesencephalon with the metencephalon as the anterior end of the neural tube.
    76 KB (11,812 words) - 17:42, 2 March 2020
  • ...e 33-hour chick as having a prosencephalon (probably Baer's forebrain) , a mesencephalon, rhombencephalon (perhaps together forming the "Vierhugel"?) , and no medul
    58 KB (9,695 words) - 16:35, 20 October 2018
  • M., mesencephalon M.B., midbrain 0.0., optic commissure P., pamphysis P.I., pars intercalaris
    62 KB (10,390 words) - 16:00, 9 June 2017
  • ** The Mesencephalon
    47 KB (7,663 words) - 13:47, 29 May 2020
  • ...hree groups; (1) an anterior group from the region of the diencephalon and mesencephalon; (2) a middle or cerebellar group in the region between the trigeminal nerv
    66 KB (10,788 words) - 17:38, 11 September 2018
  • mesencephalon.
    50 KB (7,930 words) - 10:57, 10 August 2020
  • ...lying between the anterodorsal angle of the fore-gut and the floor of the mesencephalon at the point of flexure. This structure, the reduced remnant of a prechorda ...aryngeal roof; cranial, towards the telencephalon; and caudal, towards the mesencephalon.
    141 KB (22,871 words) - 15:17, 31 March 2019
  • and mesencephalon and in some other regions. (2) A progressively
    56 KB (8,715 words) - 14:19, 28 June 2018
  • ...ent blue coloration in the mesenchymal tissue over the rhombencephalon and mesencephalon... .In the eight and nine day chick the escape of the citrate solution was
    80 KB (12,906 words) - 16:32, 9 February 2020
  • ...ulare hem., hemisphere wall hy., hypothalamus Li., lamina terminalis mes., mesencephalon n.a.L, nucleus anterior thalami n.o., nervus opticus p.a.c.t.l., posterior
    49 KB (7,635 words) - 02:54, 29 June 2020
  • ...flexure''' - (= midbrain flexure) The most cranial brain flexure, between mesencephalon and prosencephalon, of the three flexures (bends) that develop as the nuera
    75 KB (11,304 words) - 09:12, 18 September 2014
  • The posterior commissure belongs to the mesencephalon. The neuropore itself has never been followed through the successive stages
    65 KB (10,664 words) - 03:09, 29 June 2020
  • ...tly confluent areas along the brain stem from the medulla oblongata to the mesencephalon. (Approx, x 2.5 mag. CA nerve cell groups, □. 5-HT nerve cell groups, 0.
    97 KB (14,500 words) - 12:42, 2 July 2018
  • M ed.f.b., medial forebralin bundle Mesen., mesencephalon
    70 KB (11,269 words) - 17:21, 24 October 2017
  • Mesencephalon, the mid-brain.
    41 KB (5,685 words) - 09:22, 20 July 2020
  • ...lhmeters larger this periaxial exten.sion of the solution is complete. The mesencephalon first becomes entireW covered by the jjrussian-blue precipitate, with later ...lon) are surrounded by a much less dense mesenchyme than are the anterior (mesencephalon). This relative differentiation between the bulbar tissue and that around t
    370 KB (59,029 words) - 16:45, 5 December 2019
  • mesencephalon, and llie hind-brain or rhombencephalon, by constrictions in the lateral wa The third brain-vesicle or the vesicle of the midbrrain or mesencephalon gives rise to
    86 KB (14,227 words) - 21:47, 29 October 2012
  • H
    ...y brain vesicles:''' {{forebrain}} ( {{prosencephalon}}) - {{midbrain}} ({{mesencephalon}}) - {{hindbrain}} ({{rhombencephalon}})
    60 KB (8,078 words) - 10:09, 19 August 2020
  • ...Cr.Fl. Cranial flexure. D.C. Ductus Cuvieri. Dienc. Diencephalon. M esenc. Mesencephalon. M etenc. Metencephalon. Myelenc. I and 2. Anterior and posterior divisions ...g1, g2, g3. Visceral clefts. i. Isthmus. 1. Lens. ma. Mandibular arch. ms. Mesencephalon. mt. Metencephalon. a. Otocyst; to right of otocyst is ganglion of VII and
    416 KB (69,224 words) - 15:17, 21 October 2018
  • ...cephalon and myelencephalon, but not noticeably so in the diencephalon and mesencephalon. The floor plate is beginning to show its characteristic thickenings. The f ...cephalon. This is the sulcus limitans fig. 8, {Sid. Urn.). The part of the mesencephalon which
    889 KB (142,707 words) - 09:32, 19 May 2020
  • ...alon, while the faint constricted portion in front of it we take to be the mesencephalon, although a part of what we have called forebrain, just at the angle, may l
    97 KB (16,070 words) - 09:53, 16 December 2018
  • II. The mid-brain or mesencephalon extends from the posterior boundary of the mesencephalon insensibly into the spinal cord.
    341 KB (55,983 words) - 11:57, 24 April 2017
  • ...as to the front of the infundibulum, which occupies a position beneath the mesencephalon, the thalamus having been caudo-ventrally appressed upon the corpora quadri ...ian length being much greater than that of cerebrum. The ventricles of the mesencephalon are large and extend far laterad, while the tectum is highly developed.
    868 KB (140,447 words) - 12:44, 18 May 2020
  • c. The mesencephalon with its cavity, mesocoele ; sections farther cephalad show the junction of c. The kilos, the tela, the cestus, and a mesal transitory sulcus in the mesencephalon.
    103 KB (16,714 words) - 10:02, 15 May 2020
  • ...ce of definite terminations, though the fascicles reaclj backward into the mesencephalon (hypothalamus and interpeduncular region), a condition not yet noted in oth
    110 KB (17,863 words) - 09:27, 19 May 2020
  • ...tion of the corpora quadrigemina. In Mrs. Gage's case this division of the mesencephalon is much more marked.
    138 KB (23,600 words) - 18:24, 12 August 2020
  • ...tly compressed opposite the posterior commissure. In the blind Proteus the mesencephalon is smaller than the ...Anura, owing to the large optic nerve nuclei. The size of the roof of the mesencephalon is in direct proportion to the functional perfection of the eyes. The cereb
    1.16 MB (198,322 words) - 21:53, 21 May 2020
  • the posterior end of the infundibulum lies the mesencephalon prosencephalon and thick walled mesencephalon, but the paraphysis is not present and appears first in an embryo of 11 5 m
    964 KB (151,089 words) - 10:40, 15 May 2020
  • ...l ends, where the cranial and caudal neuroporic apertures are present. The mesencephalon is flexed upon itself, in such a way as to bring the prosencephalon almost
    115 KB (18,586 words) - 09:00, 20 August 2020
  • ...ponding to the fields, with indications of the telecephalon, diencephalon, mesencephalon and myelencephalon. (From Lehmann 1948.)
    116 KB (19,239 words) - 10:56, 2 December 2019
  • Mesencephalon 51 ...in plates 1 and 4, By the cephalic flexure (Flexxeph.) which occurs in the mesencephalon (Mesen.) the fore-brain is bent at an acute angle to the hindbrain. The cer
    903 KB (147,679 words) - 10:17, 16 December 2019
  • head bend occurs in a part of the tube called the mid-brain (mesencephalon). isthmus. The mesencephalon remains undivided; the fore-brain is represented by the diencephalon poster
    454 KB (73,743 words) - 17:09, 8 April 2020
  • ...12, 13, 17). Part of its medial wall is fused with the lateral wall of the mesencephalon, but its anterior end is free (figs. 21, 22). The roof of each lateral rece ...essus lateralis into the region of fusion between the diverticulum and the mesencephalon (figs. 4, 5, 23) . The medullated fibers of the cerebellum accumulate chief
    946 KB (153,652 words) - 11:15, 15 May 2020
  • ...al hfe, and its significance as a measure of growth of that portion of the mesencephalon below the iter is particularly questionable. In some fetuses of three to fo
    124 KB (17,360 words) - 20:24, 18 May 2020
  • ...ce of definite terminations, though the fascicles reaclj backward into the mesencephalon (hypothalamus and interpeduncular region), a condition not yet noted in oth ...nd, Held claims that the mesencephalic root takes origin from cells in the mesencephalon and from the locus coeruleus. Bregmann states that a lesion of the motor po
    905 KB (141,553 words) - 00:39, 26 June 2020
  • ...of of the diencephalon. Between ^ and ^ of the roof between the pineal and mesencephalon is occupied by the post-commissure. The remaining portion is precisely simi The dorsal roofs of the mesencephalon, diencephalon and primary prosencephalon are approximately equal in extent
    829 KB (134,483 words) - 18:54, 18 May 2020
  • ...MENTUM, PULVINAR, FALX, TENTORIUM, THALAMUS, CALLOSUM, STRIATUM, DENTATUM, MESENCEPHALON, PALLIUM, OLIVA, CLAVA, OPERCULUM, FISSURA CENTRALIS (for /. Rolaudo, etc.) ...cm. media, and cm. posterior distinguish members of a conventional series. Mesencephalon, prosencepJiakvi and nietencephalon designate members of a natural series,
    889 KB (142,448 words) - 13:02, 18 May 2020
  • ...cup-shaped nucleus, there were no efferent fibres to the cortex nor to the mesencephalon; that the efferent fibres all ran to the other nuclei of the thalamus, ...1.8 mm. A gi'oove marks the limit between the prosencephalon, P., and the mesencephalon, M. The stalk of the optic vesicle appears on the lateral aspect of the pro
    947 KB (155,098 words) - 16:36, 10 August 2019
  • ...rward, but they extend backward so as to hide the thalamencephalon and the mesencephalon in a dorsal view, and even project beyond the cerebellum in Man (fig. 109) Mesencephalon
    164 KB (26,842 words) - 16:30, 19 April 2017
  • ...pophysis (posterior lobe) ; isth., isthmus; med., medulla oblongata; mes., mesencephalon; ol. b., olfactory bulb; o. r., optic recess; p., pons; p. b., pineal body; Mesencephalon. The mid-brain remains undivided, and its walls become very thick. Dorsally
    604 KB (98,109 words) - 16:51, 9 April 2020
  • Chapter III. The Mid-brain, Mesencephalon 53 ...arther backward, certainly not as far as the extreme posterior part of the mesencephalon, and mdeed it seems very improbable that they should go so far backward. It
    1.07 MB (181,042 words) - 12:41, 8 April 2020
  • M., mesencephalon The mesencephalon 221
    1.03 MB (161,260 words) - 02:15, 29 June 2020
  • ...o primary right and left halves, a floor-plate is lacking, as such, in the mesencephalon and diencephalon. The floor-plate would then be recognized as extending thr ...divided the brain into epichordal and prechordal parts, ^ but includes the mesencephalon in the epichordal brain, and the reason for this is obvious; to the midbrai
    824 KB (126,137 words) - 21:51, 18 May 2020
  • mes., mesencephalon Fig. 1 Dorsal view of mesencephalon, cerebellum, and medulla oblongata of Amblystoma punctatum.
    848 KB (133,806 words) - 00:29, 26 June 2020
  • Fig. 7. Section through the mesencephalon at the posterior commissure and hippocampus. C. — HiSTOLOdV OF THE DiENCEPHALON AND MESENCEPHALON.
    789 KB (130,563 words) - 18:51, 18 May 2020
  • ...nt of the trabecula «lying upon each side beneath the thalamencephalon and mesencephalon. At its front end the trabeeula rapidly extends dorsalwards to form a verti
    191 KB (31,561 words) - 11:04, 16 June 2018
  • ...mir untersuchten Embryo in drei Abschnitte teilen, das Prosencephalon, das Mesencephalon und das Rhombencephalon.
    137 KB (21,199 words) - 18:37, 21 March 2017
  • three nerve cells (A and B from the telencephalon, and C from the mesencephalon of a bony and the mesencephalon {Ariens Kappers, ’07, ’08a, ’20) indicate that changes in
    393 KB (58,443 words) - 09:21, 21 January 2019
  • The oculomotor nerve emerges from the wall of the mesencephalon by several slender rootlets arranged in a longitudinal series (fig. 4, Oc). ...s of medullary origin which have wandered out from the mantle layer in the mesencephalon can not be doubted. They can not be traced from any other source. My observ
    1.1 MB (181,651 words) - 18:28, 18 May 2020
  • ...and the vesicle is wedged in between the walls of the thalamencephalon and mesencephalon at some distance beneath the integument. It lies posterior to the superior ...duced to a solid mass of cells, wedged in between the thalamencephalon and mesencephalon, and entirely without connection with any surrounding structure.
    898 KB (149,266 words) - 17:37, 26 December 2019
  • c. The mesencephalon with its cavity, mesocoele ; sections farther cephalad show the junction of c. The kilos, the tela, the cestus, and a mesal transitory sulcus in the mesencephalon.
    714 KB (115,829 words) - 09:32, 15 May 2020
  • ...hether oinot Polistotrema has a cerebellum. If the jiosterior lobes of the mesencephalon should in the light of future investigation turn out to be a cerebellum, th ...olls' sinus mesocoelicus (fig. 63, S.M.) mark the boundry line between the mesencephalon and the metencephalon, and to regard his isthmic and ventricular canals (fi
    1,015 KB (165,722 words) - 02:37, 29 June 2020
  • ...pophysis (posterior lobe) ; isth., isthmus; med., medulla oblongata; mes., mesencephalon; ol. b., olfactory bulb; o. r., optic recess; p., pons; p. b., pineal body; Mesencephalon. The mid-brain remains undivided, and its walls
    1.2 MB (193,399 words) - 02:42, 9 April 2020
  • Study of the effect of the removal of the anlage of the rhombo mesencephalon on morphogenesis and histogenesis of the extrinric eye muscles. Chick. Ilia L. Study of the effect of the removal of the anlage of the rhombo-mesencephalon on morphogenesis and histogenesis of the extrinsic eye muscles. Chick.
    374 KB (57,375 words) - 15:01, 9 January 2020
  • ...ars later the epiphysis. The other two (iv and v) obviously enter into the mesencephalon. In selachians these two segments have connected with them respectively the Herrick's revision of the nomenclature of the diencephalon and mesencephalon contains two new terms, ophthalmencephalon, and medithalamus. As a pedogogi
    1.41 MB (236,646 words) - 14:55, 8 April 2020
  • ...the optic lobes. The bridge, by a transverse fold, forms the limits of the mesencephalon and bends posteriorly in the form of a cornet-like projection. In six to se ...oad that part of the medullary tube which lies immediately in front of the mesencephalon closes last and remains in connection with the epidermis by a short solid b
    986 KB (157,915 words) - 19:00, 18 May 2020
  • Mesencephalon ...the colliculi and the retarded development of the peduncular portion, the mesencephalon is V-shaped as regards its ventral aspect, as well as its cephalic boundary
    1.51 MB (251,697 words) - 00:19, 25 June 2020
  • ...He further states that transverse divisions, such as the diencephalon and mesencephalon, are not ' natural regions' because the primary metamerism has ceased to be ...ds between the fourth and third ventricles, "and Bensley ('10) writes: The mesencephalon is noteworthy in a mammal as lacking a ventricle. Its cavity is a narrow ca
    942 KB (141,972 words) - 14:05, 15 December 2019
  • ...ius, which probably belongs morphologically with the pars ventralis of the mesencephalon . ...the body of this memoir I would modify Johnston's suggestions as follows: Mesencephalon
    1.09 MB (179,516 words) - 15:48, 8 April 2020
  • ...rounds, there seems no sufficient reason to ignore the independence of the mesencephalon and to include it with the cerebrum. It is to be regretted that Dr. Hardest 4. Lemniscus system, mesencephalon and diencephalon.
    955 KB (156,811 words) - 11:40, 2 March 2020
  • The continuation of the cochlear conduction path into the mesencephalon by way of the lateral lemniscus appears in the opossum as a dense mass of f ...('01) for the human brain in her general reconstruction of the medulla and mesencephalon of the new-born child. As a guide to the present work the following brief r
    902 KB (147,231 words) - 16:40, 10 August 2019
  • The nerve arises from the constriction that separates mesencephalon and thalamencephalon. As the term " mesoccphalic " has been applied by Bear ...alk, arising now as a differentiated nerve from the depression between the mesencephalon and thalamencephalon, it passes down the sides of the brain, and is lost in
    1.03 MB (176,891 words) - 21:58, 21 May 2020
  • ...hem, anticipate the more complex structure of the Anura. In the latter the mesencephalon assumes a bilobular structure and forms a prominent portion of the brain. P ...this narrow territory and the central canal contained in it is derived the mesencephalon and
    846 KB (140,336 words) - 21:55, 21 May 2020
  • ...al corrugations appear in the region representing the diencephalon and the mesencephalon; and the same number appear anterior to the occipital somite. The fact that Next proceed to the Mesencephalon-, Pedunculi Cereiri, Substantia Nigra, Tegmentum, Pons, Medulla and Cerebel
    1.14 MB (191,385 words) - 10:20, 12 April 2020
  • The oculomotor nerve is, consequently, relatively thin. Approaching the mesencephalon in the cleft between the inferior lobes and the base of the midbrain, it pi ...lobus sensitivus VII; s.g.p., secondary gustatory path directed toward the mesencephalon; s.g.VII, secondary VII (gustatory) fibers; s.V, spinal V tract; VII m., de
    951 KB (152,829 words) - 11:35, 15 May 2020
  • ...sterior surface of Rathke's pouch and extends between the diencephalon and mesencephalon. The carotids are crowded between the lateral cartilages and the lateral lo ...ed variations in this respect, being thicker below the regions of pro- and mesencephalon than below the posterior regions of the brain, The section of the rostral c
    1.16 MB (181,688 words) - 20:50, 21 May 2020
  • ...osition of the posterior commissure with reference to the diencephalon and mesencephalon. The depression on the dorsal aspect of the brain between the mesencephalon and telencephalon is filled with a loose mesenchymal network. This tissue s
    1.4 MB (234,615 words) - 20:24, 21 May 2020
  • The outlines between the mesencephalon, thalamencephalon and prosencephalon are easily made out, and correspond cl ...a group of neuroblasts forming the ventral part of the mantle layer in the mesencephalon. These neuroblasts converge to form small rootlets which pass through the g
    1.08 MB (181,284 words) - 15:53, 10 August 2019
  • The diencephalon and the mesencephalon, from our present point of view, are not natural regions, nor can any other ..., substantia nigra, basis pedunculi. III nerve, etc. — in short all of the mesencephalon of the BNA after the subtraction of the colliculus superior and col- liculu
    1.43 MB (237,418 words) - 14:27, 8 April 2020
  • Passing into the mesencephalon at about the level of Kingsbury's commiss. optici tecti a number of larger Fig. 7. Cross section of mesencephalon.
    635 KB (103,314 words) - 12:55, 18 May 2020
  • ...epidosiren closely resembles that of Protopterus. The thalamencephalon and mesencephalon do not become marked off from one another until relatively late and the cer
    701 KB (110,825 words) - 18:08, 18 May 2020
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