Skip to Content
Medical Term:

allantoic diverticulum

 

Definition: an endoderm-lined outpouching of the hindgut representing the primordium of the allantois; in most amniotes, it grows into the extraembryonic celom; in humans it is an outpouching of the dorsal wall of the yolk sac; the distal part of the allantoic lumen is rudimentary, not extending beyond the body stalk; it becomes the urachus and remain as the median umbilical ligament.

Synonym(s): allantoenteric diverticulum

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
Hide