File:Kollmann447.jpg

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Fig. 447. Descent of testicles

Schema. (After Tillaux.)


The figure represents the abdominal cavity, whose background in the spine is visible. With blue paint, the peritoneum is indicated. The gonads, which later constitutes the testis is located in the upper abdomen on both Sides of the aorta (see figure 429) and the retroperitoneum to the bar channel descending testicle receives a coating of the peritoneum at its Enter the abdominal cavity. This coating is called the visceral layer (lamina visceral) of the tunica vaginalis propria testis (formerly called Tunica adnata GE called it). Inguinal canal is not yet developed, and no prior vaginal process- hands.


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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).



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Fig. 447. Descensus testiculorum.

Schema. (Nach Tillaux.)


Die Figur stellt die Bauchhöhle dar, in deren Hintergrund die Wirbelsäule sichtbar ist. Mit blauer Farbe ist das Peritoneum angedeutet. Die Keimdrüse, welche später den Hoden darstellt, liegt oben in der Bauchhöhle zu beiden Seiten der Aorta (vergl. die Figur 429) und retroperitoneaL Der zum Leisten- kanal herabsteigende Hoden erhält einen Überzug des Peritonaeums bei seinem Eintreten in den Bauchraum. Dieser Überzug heißt das viscerale Blatt (Lamina visceralis) der Tunica vaginalis propria testis (früher auch Tunica adnata ge- nannt). Noch ist kein Leistenkanal entwickelt und kein Processus vaginalis vor- handen.

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