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Why does menstruation occur.

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Why does menstruation occur.

Posted by Mohd. Faiz 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 3 months ago

In females, only one egg is released from a single ovary every month. Every month, the uterus prepares itself to receive the embryo in case fertilization occurs. But if fertilization fails to occur, the uterine wall is breaks, so that it can be prepared for the ovary which will be released in the following month. Hence, to discard the unwanted uterine endometrial lining and the egg which is not fertilized, menstruation occurs in human females in a cycle of 28 days.

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CBSE > Class 10 > Science