The Extraembryonic Membrane That Forms the Fetal Portion of the Placenta

Question

The extraembryonic membrane that forms the fetal portion of the placenta is the
A) yolk sac.
B) amnion.
C) allantois.
D) chorion.
E) decidua.

Accepted Answer

The chorion is the outermost extraembryonic membrane that forms the fetal portion of the placenta.