vitelline duct


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Related to vitelline duct: yolk sac, Meckel's diverticulum, allantois

vitelline duct

[vī′tel‚ēn ′dəkt]
(embryology)
The constricted part of the yolk sac opening into the midgut region of the future ileum. Also known as omphalomesenteric duct; umbilical duct.
References in periodicals archive ?
During embryonic development, the omphalomesenteric duct (Omphaloenteric duct, vitelline duct or yolk stalk) normally connects the embryonic midgut to the yolk sac ventrally, providing nutrients to the midgut during embryonic development.
Meckel's diverticulum is a remnant of the vitelline duct that is usually located 45 to 60 cm proximal to the ileocecal valve on the antimesenteric border of the ileum.
Principal vitelline duct emerges from vitelline reservoir and unite with oviduct.
1] It is an incomplete closure of the omphalomesenteric or vitelline duct and maybe present in forms ranging from an unseen bump to a long projection in communication with the umbilicus via a persistent fibrous cord.
INTRODUCTION: Meckel's diverticulum is an embryologic remnant of the vitelline duct with an average length of three cm and an occurrence rate of 1-3% in the adult population.
1,2) It is caused by the failure of vitelline duct to obliterate.