A menstrual flow results from _____.
A) the implantation of a fertilized ovum in the endometrium
B) a decrease in progesterone and estrogen levels
C) the release of gonadotropin-releasing hormone by the hypothalamus
D) the production of prostaglandins by the uterus
E) the release of progesterone and estrogen by the corpus luteum

Question

Quizplus · Accepted Answer

A menstrual flow results from a decrease in progesterone and estrogen levels, which causes the endometrial lining of the uterus to shed. This occurs when fertilization of an egg does not occur.

A Menstrual Flow Results from _____