File:Kollmann357.jpg: Difference between revisions

Fig. 357. Ventral wall of the foregut seen from the inside embryo 2.15 mm

Also called the oral floor, that area in which the tongue, the larynx (voice box), thyroid (thyroid) and thymus arise.

Length of human embryo 2.15 mm, about 12 days old.

(After His.)

By cutting the dorsal portion of the foregut, including the Maxillary process and the brain tube removed. Thus, only the lateral visible and the front ends of the gill arch. While on the outer side of the head only of I. and II branchial arches were developed are in Already created inside the four branchial arches, although the III. and IV only stand out weak. The tuberculum impar is to make the front tongue used in the furcula is created with the larynx including the epiglottis. The ventral wall of the foregut from the outside seen in several of the previous figures (See Figures 350-352).

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Images from - Atlas of the Development of Man (Volume 2)

(Handatlas der entwicklungsgeschichte des menschen)

Kollmann Atlas 2: Gastrointestinal | Respiratory | Urogenital | Cardiovascular | Neural | Integumentary | Smell | Vision | Hearing | Kollmann Atlas 1 | Kollmann Atlas 2 | Julius Kollmann

Links: Julius Kollman | Atlas Vol.1 | Atlas Vol.2 | Embryology History

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Reference

Kollmann JKE. Atlas of the Development of Man (Handatlas der entwicklungsgeschichte des menschen). (1907) Vol.1 and Vol. 2. Jena, Gustav Fischer. (1898).

Cite this page: Hill, M.A. (2024, April 25) Embryology Kollmann357.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Kollmann357.jpg

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Fig.357. Ventrale Wand des Kopfdarms von innen gesehen, auch Mundboden genannt, jenes Gebiet, auf welchem die Zunge, der Kehlkopf (Larynx), Schilddrüse (Thyreoidea) und Thymus entstehen. Länge des menschHchen Embryo 2,15 mm, etwa 12 Tage alt.

(Nach His.)

Durch einen Schnitt ist der dorsale Abschnitt des Kopfdarms samt dem Oberkieferfortsatz und dem Hirnrohr entfernt. Es sind also nur die seitlichen und vorderen Enden der Kiemenbogen sichtbar. Während auf der äußeren Seite des Kopfes nur der I. und IL Kiemenbogen entwickelt waren, sind im Innern schon die vier Kiemenbogen angelegt, wenn auch der III. und IV. erst schwach hervortreten. Das Tuberculum impar wird zur Herstellung der Vorder- zunge verwendet, aus der Furcula entsteht der Kehlkopf mit samt der Epiglottis. Die ventrale Wand des Kopfdarms von außen ist in mehreren der vorhergehenden Figuren 350—352 zu sehen.