omphalomesenteric vein


: any of the veins in a vertebrate embryo that return the blood from the yolk sac to the heart or later to the portal vein and in mammals have their function of bringing nutriment to the embryo superseded early by that of the umbilical vein

called also vitelline vein

Dictionary Entries Near omphalomesenteric vein

Cite this Entry

“Omphalomesenteric vein.” Medical Dictionary, Merriam-Webster, Accessed 3 Mar. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!