Why is human chorionic gonadotropin (hCG) important early in pregnancy?
A) guides the embryo to the appropriate site for implantation
B) promotes cleavage of the zygote
C) prevent other sperm from fertilization the oocyte
D) prods the corpus luteum to continue producing hormones
E) promotes menstruation

Question

Quizplus · Accepted Answer

hCG, produced by the developing embryo, stimulates the corpus luteum to continue producing estrogen and progesterone, which are necessary to maintain the uterine lining and support the developing embryo until the placenta is fully functional. Without hCG, the corpus luteum would degenerate and hormone production would cease, leading to a miscarriage or failed pregnancy.

Why Is Human Chorionic Gonadotropin (HCG) Important Early in Pregnancy