chorion

Traductions

• anglais

  Auteur : Institut libre Marie Haps, 1985

  Définition

  In human embryology, the cellular, outermost extraembryonic membrane, composed of trophoblast lined with mesoderm.

  Note :

  It develops villi about 2 weeks after fertilization, is vascularized by allantoic vessels a week later, gives rise to the placenta and persists until birth.

  Terme :

  1. chorion