Question

select the correct answer
which process is responsible for causing menstruation?
a. breakdown of the corpus luteum
b. fertilization of the egg
c. implantation of the egg in the endometrium
d. rupture of a follicle in the ovary
e. repair of the endometrial lining

Explanation:

Menstruation is the shedding of the endometrial lining. After ovulation, if fertilization (B) does not occur, the corpus luteum (A) breaks down. This leads to a drop in progesterone and estrogen levels. As a result, the endometrial lining (E) which was prepared for potential implantation (C) is no longer maintained. Rupture of a follicle (D) is ovulation itself. Menstruation is specifically the breakdown and shedding of the endometrial lining.

Answer:

A. breakdown of the corpus luteum