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Importance of Corpus Luteum

The main caus...

Question

The main cause of the disintegration of the endometrial lining?

A

LH surge

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B

Degeneration of corpus luteum

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C

Ovulation during mid-cycle

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D

Implantation leads to pregnancy

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Solution

The correct option is B Degeneration of corpus luteum

Main cause of the disintegration of the endometrium

In the absence of fertilisation, the corpus luteum degenerates and the level of progesterone hormone falls.

This causes disintegration of the endometrium leading to menstruation, marking a new cycle.

Final answer:

(b) Degeneration of corpus luteum

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Q. Assertion :Menstrual phase is also called 'shedding tears for lost ovum'. Reason: In the menstrual phase, the cast of endometrial lining along with unfertilized ovum takes place due to reduced titer of estrogen and progesterone.

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Importance of Corpus Luteum

Standard XII Biology

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