The embryonic membrane that has villi to provide nourishment for the early embryo is the:
A)chorion
B)amnion
C)yolk sac
D)umbilical cord

Question

Quizplus · Accepted Answer

The chorion is the embryonic membrane that has villi to provide nourishment for the early embryo. The villi form the chorionic membrane which plays an important role in the exchange of gases and nutrients between the embryo and the mother's blood. The amnion is a different embryonic membrane that surrounds and protects the developing embryo with amniotic fluid. The yolk sac plays a role in early blood cell development and nutrient transport, but it does not have villi. The umbilical cord connects the developing embryo to the placenta and contains blood vessels, but it is not an embryonic membrane with villi.

The Embryonic Membrane That Has Villi to Provide Nourishment for the Early