File:Keibel Mall 2 550.jpg

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Fig. 550. Transverse section of the urogenital fold of an embryo of 19.4 mm vertex-breech length

At a level between the 21st and 22nd spinal ganglia. (Embryo Ma. 2, from the collection of Professor Hochstetter, Vienna; slide 59, row 1, section 3.) x 50.

The medial bay of the body cavity now also penetrates into the retroperitoneum and narrows the base of the urogenital fold to a stalk. Two fossae separate the area of the reproductive gland from the urogenital fold and bring about a division of the latter into the mesonephric and genital folds. The point where these are still connected is the first anlage of the mesogenitale. (Stiel = stalk.)


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Felix W. The development of the urinogenital organs. In Keibel F. and Mall FP. Manual of Human Embryology II. (1912) J. B. Lippincott Company, Philadelphia. pp 752-979.

XIX Development of the Urinogenital Organs: Excretory Glands and their Ducts | Reproductive Glands and their Duct | Urogenital Union | External Genitalia | Figures | Literature
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Cite this page: Hill, M.A. (2024, April 26) Embryology Keibel Mall 2 550.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Keibel_Mall_2_550.jpg

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