Exams › NEET › Biology

Menstrual flow occurs due to lack of:

1. FSH
2. Oxytocin
3. Vasopressin
4. Progesterone

Correct answer: Progesterone

Solution

Progesterone keeps the endometrium thick and stable during the luteal phase. If pregnancy does not occur, progesterone levels fall, causing the uterine lining to shed as menstrual flow.

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