File:Keibel Mall 2 554a.jpg

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Fig. 554a. Transverse sections through a human embryo of 30 mm trunk length

554a | 554b | 554c

(Embryo R. Meyer 273, from the collection of Professor Meyer, Berlin; slide 11, row 4, section 2; slide 13, row 5, section 2; slide 14, row 5, section 2.) The three sections show the formation of the genital cord. The legends have been arranged so that different structures are indicated in each section and the reader should first study the legends in all three figures.

a. The mesonephric fold bends between the tubar and gland portions at a right angle and is growing around the reproductive gland, so that the left and right mesonephros come to lie in the same frontal plane. The excretory duct and the tube are shown in the mesonephric fold. The originally lateral tube comes to lie medially, as a result of the bending of the fold. b. An evagination (the inguinal fold) extends from the mesonephric fold between the bladder and the lateral wall of the body to unite with the posterior surface of the anterior abdominal wall (in Fig. c it is cut throughout its entire length). The right and left mesonephric folds have come nearer together.


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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 554a.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Keibel_Mall_2_554a.jpg

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