From the __________, tiny __________ emerge, which burrow into the uterine wall and start to develop the placenta.
A) amnion; veins
B) chorion; villi
C) trophoblast; hairs
D) embryonic disk; veins

Question

Quizplus · Accepted Answer

The chorion is the embryonic membrane that surrounds the fetus and gives rise to the placenta. Within the chorion, tiny finger-like projections called villi emerge and begin to burrow into the uterine wall, forming the basis of the placenta.

From the __________, Tiny __________ Emerge, Which Burrow into the Uterine

From the , Tiny Emerge, Which Burrow into the Uterine