File:Umbilical Region of a Human Embryo 5.2 cm. in Length.jpg

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Description Fig. 15. — Sagittal View of a Graphic Reconstruction of the Umbilical Region of a Human Embryo 5.2 cm. in Length. From within, the relations of the umbilical arteries to the vein are clearly seen. They surround the funnel-shaped remnant of the exocoelom. No trace of the omphalomesenteric vessels is to be seen in the peritoneal cavity, but in cross-sections of the cord near the embryo the lumen of the umbilical vein still persists, as indicated in the small drawing to the left. It is embedded in the wall of the exocoelom, but has no connection with any other vascular structure. The bladder bulges out between the umbilical arteries. The urachus (allantois) passes out into the cord between and below the umbilical arteries. This is the characteristic arrangement. The urachus shows two dilatations.
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Source https://archive.org/details/embryologyanatom00cull/page/14/mode/2up Embryology, anatomy, and diseases of the umbilicus : together with diseases of the urachus
Author Cullen, Thomas Stephen, 1868-1953

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current22:22, 17 February 2024Thumbnail for version as of 22:22, 17 February 2024864 × 945 (763 KB)Rasbak (talk | contribs){{Information |description=Fig. 15. — Sagittal View of a Graphic Reconstruction of the Umbilical Region of a Human Embryo 5.2 cm. in Length. From within, the relations of the umbilical arteries to the vein are clearly seen. They surround the funnel-shaped remnant of the exocoelom. No trace of the omphalomesenteric vessels is to be seen in the peritoneal cavity, but in cross-sections of the cord near the embryo the lumen of the umbilical vein still persists, as indicated in the small drawing t...

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