File:Yolk-sac with the embryo 5.5 cm.jpg

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Description Fig. 31. — The Appearance of the Yolk-sac (Umbilical Vesicle) in a Pregnancy, with the human Embryo 5.5 cm. Long. The chorion has been split and turned back on the uterine wall. The amniotic cavity is still intact, appearing as a tensely filled oval cyst containing the embryo. Coming from the placental attachment of the umbilical cord is a delicate vaseular thread which passes to the flattened, yellowish, opaque yolk-sac, now referred to as the umbilical vesicle. It remains approximately this size until birth. (See Fig. 32.)
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Source https://archive.org/details/embryologyanatom00cull/page/28/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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current21:26, 16 February 2024Thumbnail for version as of 21:26, 16 February 2024718 × 575 (362 KB)Rasbak (talk | contribs){{Information |description=Fig. 31. — The Appearance of the Yolk-sac (Umbilical Vesicle) in a Pregnancy, with the Embryo 5.5 cm. Long. The chorion has been split and turned back on the uterine wall. The amniotic cavity is still intact, appearing as a tensely filled oval cyst containing the embryo. Coming from the placental attachment of the umbilical cord is a delicate vaseular thread which passes to the flattened, yellowish, opaque yolk-sac, now referred to as the umbilical vesicle. It remai...

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