Mark the incorrect statement about menstruation.

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Lack of menstruation may be due to stress, poor health, etc.

Menstrual flow is due to regeneration of endometrium of the uterus.

The menstrual phase is followed by the follicular phase.

All events of the menstrual cycle stop during pregnancy.

answer is C.

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Detailed Solution

The menstrual flow results due to breakdown (degeneration) of endometrial lining of the uterus and its blood vessels which forms liquid that comes out through vagina. Menstruation only occurs if the released ovum is not fertilised. Lack of menstruation may be indicative of pregnancy. However, it may also be caused due to some other underlying causes like stress, poor health etc. The menstrual phase is followed by the follicular phase. During pregnancy, all events of the menstrual cycle stop and there is no menstruation.

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