File:Cullen1916 fig16.jpg

Fig. 16. Intra-abdominal View of the Umbilical Region of a Human Embryo 6.5 cm in Length

(X 9.)

A portion of the abdominal wall, including the umbilicus, has been excised. The bladder lies between the umbilical arteries and gradually diminishes in caliber toward the umbilicus. This is clearly seen in the cross-section projected in the lower picture. The umbilical vein emerges from the abdominal wall just above the umbilical region. The umbilical opening is closed, its former position being now recognized as several shallow pits in the peritoneum. To the left is a cross-section of the flattened cord, containing, in addition to the umbilical vessels, the allantois, which is obliterated at this point. There are no remnants of either exocoelom or omphalomesenteric structures.

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Figure Links: 1 Human embryo 0.7 mm | 2 Human embryo 1.7 mm | 3 Human embryo 2.5 mm | 4 Human embryo 3.5 mm | 5 Human embryo 5 mm | 6 Human embryo 7 mm | 7 Human embryo 7 mm | 8 Human embryo 10 mm | 9 Human embryo 12.5 mm | 10 Human embryo 10 mm | 11 Human embryo 23 mm | 12 Human embryo 3 cm | 13 Human embryo 4.5 cm sagittal | 14 Human Embryo 4.5 cm | 15 Human Embryo 5.2 cm | 16 Human Embryo 6.5 cm | 17 Human Embryo 7.5 cm | 18 Human Embryo 9 cm | 19 Human Embryo 10 cm | 20 Human Embryo 12 cm | 21 Human Embryo 12 cm | 22 Human Embryo 12 cm | 23 Human Embryo 12 cm Cord | 28 Fetus Five Months | 30 Ventral Heria | 31 Human Embryo 5.5 cm | 32 Term Human | 33 Term Human | [[Figures

Reference

Cullen TS. Embryology, anatomy, and diseases of the umbilicus together with diseases of the urachus. (1916) W. B. Saunders Company, Philadelphia And London.

Cite this page: Hill, M.A. (2024, April 25) Embryology Cullen1916 fig16.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Cullen1916_fig16.jpg

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