umbilical vesicle

noun

Medical Definition of 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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Dictionary Entries Near umbilical vesicle

umbilical vein

umbilical vesicle

umbilicated

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Cite this Entry

“Umbilical vesicle.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/umbilical%20vesicle. Accessed 28 Oct. 2021.

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