Menstruation occurs due to

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

rising levels of LH

rising levels of progesterone

declining levels of progesterone

rising levels of estrogen

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Menstruation occurs due to declining levels of progesterone.

During the menstrual cycle, the corpus luteum, formed after ovulation, secretes progesterone and estrogens, which promote the growth of endometrial glands, vascularisation, and thickening of the uterine lining in the secretory phase. These hormonal changes prepare the uterus for potential embryo implantation. If fertilisation doesn't occur, the corpus luteum degenerates, leading to a decline in progesterone and estrogen levels, triggering menstruation due to the constriction of blood vessels in the endometrium. This allows the shedding of the uterine lining, marking the start of a new cycle.

Watch 3-min video & get full concept clarity