What would happen if the chorion failed to secrete human chorionic gonadotropin?
A) The maternal elements of the placenta would fail to develop.
B) The fetal elements of the placenta would fail to develop.
C) Neural tube formation would not occur, and the embryo would have no central nervous system.
D) The embryo would be spontaneously aborted.

Question

Quizplus · Accepted Answer

Human chorionic gonadotropin (hCG) is essential for maintaining the pregnancy in the first trimester by stimulating the corpus luteum of the ovary to continue producing progesterone. Without hCG secretion by the chorion, the corpus luteum would regress, and the pregnancy would not continue, resulting in spontaneous abortion. Maternal and fetal elements of the placenta and neural tube formation would not be affected by low levels of hCG secretion.

What Would Happen If the Chorion Failed to Secrete Human