What involves the breakdown of the endometrium?

1 Answer
Grace F.
May 12, 2017

The decrease in specific hormone levels.

Explanation:

In the final stage of the menstrual cycle, progesterone levels increase, progesterone is a hormone which thickens the endometrial lining in the uterus to nourish a fertilized egg. Though if pregnancy does not occur, estrogen and progesterone levels then decrease . The decrease in progesterone levels cause menstruation , or the breakdown of the endomentrium layer.

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