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==Fig. 165. Mesencephalon and telencephalon of a human embryo from the end of the fourth week== he, cerebral vesicle; in, infundibulum; ma, mammillary process; mi, mesencephalon; op, torus opticus; t, lamina ferminalis; zw, diencephalon.

...3 primary brain vesicles are formed; forebrain (prosencephalon) midbrain (mesencephalon), and hindbrain (rhombencephalon). These structures then differentiate into

# midbrain (mesencephalon) ...ondary vesicles.jpg|5 secondary vesicles]] (telencephalon - diencephalon - mesencephalon - metencephalon - myelencephalon)

.... II2, p. 183, Fig. 187.) Xca. 50. au, opiio vesicle; e, telencephalon; m, mesencephalon; z, diencephalon.

# cranial (cephalic) flexure - pushes mesencephalon upwards

...arising from the neural crest cells contributed by the prosencephalon. The mesencephalon is also believed to contribute neural crest cells for migration.

...3 primary brain vesicles are formed; forebrain (prosencephalon) midbrain (mesencephalon), and hindbrain (rhombencephalon). These structures then differentiate into

...numbers are indicated brain and spinal-cord neuromeres, numbered from the mesencephalon backward. The black lines and numbers indicate the position of the body-seg

P.. prosencephalon; M., mesencephalon; R., rhombencephalon ; Ms., spinal cord; cw., chiasma eminence; J., infundi

T., Telencephalon; D., diencephalon; M., mesencephalon; Mt., metencephalon; Ml., myelencephalon; c., cerebellum; cc., cerebellar c

...nvexity of the thalamus. The occipital lobes diverge, making the midbrain (mesencephalon) namely the quadrigeminal plate in large part is visible. occipitales weichen auseinander, wodurch das Mittelhirn (Mesencephalon) und zwar

...numbers are indicated brain and spinal-cord neuromeres, numbered from the mesencephalon backward. The black lines and numbers indicate the position of the body-seg

...Monro), the roof of the diencephalon, the investment of the corpus of the mesencephalon, aqueduct, and the Isthmus bridge curvature highlighted by labels. The corp pineale, des Mesencephalon, Aquaeductus, Isthmus und die Brückenkrümmung

- Mesencephalon does not further develop into a secondary brain vesicle

# [[Neural_-_Mesencephalon_Development|Mesencephalon]]

...e secondary subdivisions: Prosencephalon (Telencephalon and Diencephalon), Mesencephalon, and Rhombencephalon (Metencephalon, Myelencephalon). Also, shows the crani

des Dieocephaloo (Zwischenhims), des Mesencephalon (Mittelhirns), des Klein-

V.ca = vena cardinalis anterior, Tel= telenchephalon, M= mesencephalon, Rh= rhombencephalon, He= heart, Hl= hindlimb bud, Aa= forelimb bud, 1= 1st

...e secondary subdivisions: Prosencephalon (Telencephalon and Diencephalon), Mesencephalon, and Rhombencephalon (Metencephalon, Myelencephalon)

M= Mesencephalon, Tel = telencephalon, Hl = hindlimb bud, Aa= Forelimb bud, O= otic vesicle,