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



Answer :

Final answer:

The breakdown of the corpus luteum causes menstruation in the menstrual cycle.


Explanation:

The breakdown of the corpus luteum is responsible for causing menstruation. The corpus luteum, which forms after the release of the egg during ovulation, produces progesterone to maintain the endometrium. If the egg is not fertilized, the corpus luteum degenerates, progesterone levels drop, and the endometrium sheds, resulting in menstruation.


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