File:Frazer1935 fig04.jpg

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Fig. 4. A series of sections along the lateral projection of the sinus

Beginning at the Wolffian duct (WD) and ureter (U), from an embryo of 12-5 mm. The series is complete except for two omitted just before the last. After K no sign of the duct remnant could be found. The lining cells of the sinus envelop the duct and ureter closely in A and B, and irregular degenerating remnants can be found along the duct, as in E at S.

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Links: Fig 1 Wolflian body embryo 4.9 mm | Fig 2 Walls of cavities from embryos 4.9, 5, and 8 mm | Fig 3 Cloacal expansion outwards along Wolflian duct | Fig 4 Lateral projection of sinus | Fig 5 Wolffian duct “taken up” into cavity of bladder | Fig 6 Lateral dilatation of sinus embryo 8 mm | Fig 7 Dorsal walls of urogenital sinuses embryos 18, 21, and 28 mm | Fig 8 Lining cell layers


Frazer JE. The terminal part of the wolffian duct. (1935) J Anat., 69(4): 455–468. PMID 17104551

Cite this page: Hill, M.A. (2024, February 22) Embryology Frazer1935 fig04.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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