In the menstrual cycle, every month the female reproductive system generates an ovum. When the ovum is not fertilized, production of which of the following leads to menstruation?
A) Follicle stimulating hormone by the anterior pituitary
B) Estrogen by the corpus luteum begins to decrease
C) Progesterone by the corpus luteum beginning to decrease
D) Another ovum which begins immediately

Question

Quizplus · Accepted Answer

When the ovum is not fertilized, the corpus luteum (which develops from the follicle that released the ovum) starts to degenerate and decrease production of progesterone. This progesterone withdrawal leads to the shedding of the uterine lining and thus menstruation.

In the Menstrual Cycle, Every Month the Female Reproductive System