The placenta is made up of a contribution from mother and fetus. Which portion is from the fetus?
A) chorion
B) umbilicus
C) yolk sac
D) amnion

Question

Quizplus · Accepted Answer

The chorion is a membrane that surrounds the fetus and forms the outermost layer of the placenta. It is developed from the trophectoderm of the blastocyst, which is the fetal tissue. The other options—umbilicus, yolk sac, and amnion—are all structures that are associated with the fetus, but they do not contribute to the formation of the placenta.

The Placenta Is Made Up of a Contribution from Mother