释义 |
extraembryonic membrane
ex′traembryon′ic mem′brane n. any of the membranes derived from embryonic tissue that lie outside the embryo, as the allantois, amnion, chorion, and yolk sac. extraembryonic membrane
extraembryonic membrane[¦ek·strə‚em·brē′än·ik ′mem‚brān] (embryology) fetal membrane MedicalSeefetal membrane |