umbilical vesicle

Medical Dictionary

umbilical vesicle n.
See yolk sac.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
WordNet
umbilical vesicle

noun
membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional [syn: yolk sac
WordNet® 3.0, © 2006 by Princeton University.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature