File:Male vas deferens and bladder week6to10.jpg

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Male vas deferens and Bladder (week 6 to 10)

Schematic representations of the descent of the Wolffian duct (WD) or vas deferens. Anterior view.

(A) 6 weeks the WD (red) opens to the urogenital sinus at a site adjacent to the ureteral orifice (UR; green).

(B, C) 7–8 weeks rather than descent, there are individual variations in the WD position along the mediolateral axis as well as in left/right difference in morphology of the urogenital sinus (URS). The future bladder and urethra are not discriminated in the sinus.

(D) 8–9 weeks, the bilateral upper angles (arrows) of the URS start upward growth toward the umbilicus. At 9 weeks , depending on development of smooth muscles in the bladder as well as rhapdosphincter muscles of the urethra (RS), the descent of the vas deferens becomes evident. However, the epithelium is still same (arrowheads) between the future bladder and urethra.

(E) At 10–11 weeks a drastic upward growth of bladder smooth muscles as well as a developing prostate (PR) accelerates the descent of the vas.

Historic Embryology - Genital
General: 1901 Urinogenital Tract \| 1902 The Uro-Genital System \| 1904 Ovary and Testis \| 1912 Urinogenital Organ Development \| 1914 External Genitalia \| 1921 Urogenital Development \| 1921 External Genital \| 1942 Sex Cords \| 1953 Germ Cells \| Historic Embryology Papers \| Historic Disclaimer
Female: 1904 Ovary and Testis \| 1904 Hymen \| 1912 Urinogenital Organ Development \| 1914 External Genitalia \| 1914 Female \| 1921 External Genital \| 1927 Female Foetus 15 cm \| 1927 Vagina \| 1932 Postnatal Ovary
Male: 1887-88 Testis \| 1904 Ovary and Testis \| 1904 Leydig Cells \| 1906 Testis vascular \| 1909 Prostate \| 1912 Prostate \| 1914 External Genitalia \| 1915 Cowper’s and Bartholin’s Glands \| 1920 Wolffian tubules \| 1935 Prepuce \| 1935 Wolffian Duct \| 1942 Sex Cords \| 1943 Testes Descent \| Historic Embryology Papers \| Historic Disclaimer

Historic Embryology - Renal
1905 Uriniferous Tubule Development \| 1907 Urogenital images \| 1911 Cloaca \| 1921 Urogenital Development \| 1915 Renal Artery \| 1917 Urogenital System \| 1925 Horseshoe Kidney \| 1926 Embryo 22 Somites \| 1930 Mesonephros 10 to 12 weeks \| 1931 Horseshoe Kidney \| 1932 Renal Absence \| 1939 Ureteric Bud Agenesis \| 1943 Renal Position

Reference

Jin ZW, Abe H, Hinata N, Li XW, Murakami G & Rodríguez-Vázquez JF. (2016). Descent of mesonephric duct to the final position of the vas deferens in human embryo and fetus. Anat Cell Biol , 49, 231-240. PMID: 28127497 DOI.

Copyright

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Fig 9. aacb-49-231-g009-l.jpg adjusted in size and labelled with PMID

Cite this page: Hill, M.A. (2024, April 27) Embryology Male vas deferens and bladder week6to10.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Male_vas_deferens_and_bladder_week6to10.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:53, 31 January 2017		800 × 918 (86 KB)	Z8600021 (talk \| contribs)	===Reference=== <pubmed>28127497</pubmed> PMID 28127497 http://acbjournal.org/DOIx.php?id=10.5115/acb.2016.49.4.231 ====Copyright==== This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Licen...

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