vitelline sac meaning and definitionDefinition and meaning of vitelline sac at MeaningMonkey.org. vitelline sac meaning and definition in the English Dictionary.
VITELLINE SAC noun
Definition of vitelline sac (noun)
- membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
- synonyms: umbilical vesicle, vesicula umbilicus, yolk sac
Source: Princeton University Wordnet