File:Frazer1935 fig08.jpg

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Fig. 8. These diagrams represent only the lining cell layers

A. To show the method by which the actual opening of the duct is gained. The superficial wall of the embedded part breaks down and disappears (interrupted line in second figure), leaving orifice of duct at its low level.

B. Diagrams to show the efiect on duct (black) and ureteric level of growth of sinus upwards from the fixed level (a). The ureteric orifice is raised most (b), while the embedded end of the duct is not only turned up but also lengthened (c) to a smaller extent. The epithelial mass (dotted) round openings of ureter and duct in the first figure is hollowed to a small funnel and then drawn out between b and c.

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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 26) Embryology Frazer1935 fig08.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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