umbilical vesicle


: the yolk sac of a mammalian embryo usually having the form of a fluid-filled pouch, corresponding to the yolk sac of an oviparous vertebrate, and having a transitory connection with the digestive tract by way of the omphalomesenteric duct

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Cite this Entry

“Umbilical vesicle.” Medical Dictionary, Merriam-Webster, Accessed 1 Apr. 2023.

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