File:Umbilical Region in a Human Embryo 12 cm. in length. (X 3).jpg

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Fig. 22. — Ixtra-abdomixal View of the Umbilical Region" in a Human Embryo 12 cm. in Lexgth. (X 3.)

The urachus is very narrow, as seen in the lower cross-section. In the cord, however, it (the allantois) has at several points a definite lumen lined with polygonal cells. The umbilical ring is completely closed. Fig. 23 gives an external view of the umbilical region of the same embryo.
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Source https://archive.org/details/embryologyanatom00cull/page/20/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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current09:40, 18 February 2024Thumbnail for version as of 09:40, 18 February 2024652 × 807 (406 KB)Rasbak (talk | contribs){{Information |description=Fig. 22. — Ixtra-abdomixal View of the Umbilical Region" in a Human Embryo 12 cm. in Lexgth. (X 3.) The urachus is very narrow, as seen in the lower cross-section. In the cord, however, it (the allantois) has at several points a definite lumen lined with polygonal cells. The umbilical ring is completely closed. Fig. 23 gives an external view of the umbilical region of the same embryo. |date= 1916 |source=https://archive.org/details/embryologyanatom00cull/page/20/mo...

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