File:Keibel Mall 2 635.jpg

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Fig. 635. Portion of a transverse section of a human embryo of 26 mm greatest length

(Embryo R. Meyer 321, from the collection of Professor R. Meyer, Berlin; slide 49, row 5, section 3.) X ca. 30.

The section shows the left mesonephric fold: it has formed a secondary fold, the plica inguinalis. On the posterior surface of the anterior abdominal wall a crista inguinalis has formed, and with it the plica inguinalis has united. The point of union is still distinctly recognizable. Within the crista a cord of compact mesenchyme has appeared, the chorda gubernaculi in the narrower sense. It may be followed through the abdominal wall to an opening in the aponeurosis of the obliquus abdominis externus. From this opening a second cord of compact mesenchyme, the lig. scroti, extends to the integument. The anterior abdominal wall has thickened except at the point of insertion of the crista inguinalis; thus the crista comes to lie in a groove, the anlage of the saccus vaginalis.


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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 2 635.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Keibel_Mall_2_635.jpg

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current09:05, 19 February 2014Thumbnail for version as of 09:05, 19 February 20141,000 × 1,073 (223 KB)Z8600021 (talk | contribs)==Fig. 635. Portion of a transverse section of a human embryo of 26 mm greatest length== (Embryo R. Meyer 321, from the collection of Professor R. Meyer, Berlin; slide 49, row 5, section 3.) X ca. 30. The section shows the left mesonephric fold: it ...

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