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Fig. 752. Another embodiment of the auditory organs in a human fetus of 8 cm CRL

Horizontal section through the eustachian tube and tympanic cavity at the height of the oval window.

(From a preparation of von Siebenmann.)

The first branchial pouch opens wide as not earlier in the foregut, but g ^ eht narrowed and that in the oral cavity. This narrowing is due to the installation of the eustachian tube. As the drum cavity lateral extension of the column is considered. Anvil (crus longum) and manubrium are maUei laterally and are like the processus longus (folii) and the lower jaw, made ​​by the cut. In close proximity to the dorsal wall liefft the cross section of the internal carotid and the cochlea, from the turn of the unerste appears on the cut surface. The outer gill pouch has deepened to an external auditory canal and the eardrum closes the passage.



This text is a Google translate computer generated translation and may contain many errors.

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
Historic Disclaimer - information about historic embryology pages 
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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 20) Embryology Kollmann752.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Kollmann752.jpg

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Fis« 752. Weitere Ausgestaltung des Organen auditus bei einem mensclilichen

Fetus von 8 cm Kopfsteiftlänge.

Horizontalschnitt durch die Anlage der Tuba auditiva und der Trommelhöhle in der

Höhe der Fenestra ovalis.

(Nach einem Präparat von Siebenmann.)


Die erste Kiementasche mündet nicht breit wie früher in den Kopfdarm, sondern g^eht verschmälert und zwar in die Mundhöhle. Diese Verschmälerung ist auf die Anlage der Tuba auditiva zurückzuführen. Als Trommelhöhle ist die laterale Erweiterung der Spalte zu betrachten. Amboß (crus longum) und Manubrium maUei liegen lateral und sind wie der Processus longus (Folii) und der Unterkiefer, durch den Schnitt getroffen. In nächster Nähe zur dorsalen Wand liefft der Querschnitt der Carotis interna und die Cochlea, von der die unerste Windung auf der Schnittfläche erscheint. Die äußere Kiementasche hat sich zu einem äußeren Gehörgang vertieft und das Trommelfell schließt den Gang.

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current12:36, 21 October 2011Thumbnail for version as of 12:36, 21 October 2011751 × 415 (67 KB)S8600021 (talk | contribs){{Kollmann1907}} Category:Hearing Fis« 752. Weitere Ausgestaltung des Organen auditus bei einem mensclilichen Fetus von 8 cm Kopfsteiftlänge. Horizontalschnitt durch die Anlage der Tuba auditiva und der Trommelhöhle in der Höhe der Fenestra

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