Vitelline Sac
nounverified·updated May 18, 2026
a membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
Framework senses
- §1
- a membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
- §1 · legacy_primary
- a membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functionalDR-088 backfill from the noun definition column