File:Keibel Mall 2 603.jpg

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Fig. 603 a and b. Model of the bladder of a human embryo of 7 mm greatest length

(Embryo Chr. I, from the collection of Professor Hochstetter, Vienna.)

Model prepared by my son, Willy Felix, a. From the right side; b, a median sagittal section.

The cloaca has grown somewhat; by the gradual formation of the lower half of the ventral abdominal wall the umbilicus, and with it the allantoic stalk, is carried away from the cloacal membrane, and, as a result, there is formed, above the latter, a newly formed portion of the ventral wall of the cloaca, from which the allantoic stalk arises at a right angle as before. The division of the cloaca into the rectum and the ventral remains of the cloaca is almost complete, the saddle between the two being immediately over the cloacal membrane. Between the two there is still a tubular communication, the cloacal duct of Reichel.


Online Editor cloacal duct of Reichel - during separation of the cloaca, a transient connection between the rectum and urogenital cavity. Named after Friedrich P. Reichel (1858-1934) a German gynaecologist and surgeon.


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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 27) Embryology Keibel Mall 2 603.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Keibel_Mall_2_603.jpg

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