Question

why does menstruction occur?​

Answer 1

Answer:

A menstruction occurs because of changes in hormones in the body. Hormones are chemical messengers. The ovaries release the female hormones estrogen and progesterone . These hormones cause the lining of the uterus (or womb) to build up.

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Answer 2

Answer:

you mean mensturation?

Explanation:

a mensturation occur because of hormonal change. hormones are chemical messenger. the ovaries release the female hormone estrogen and progesterone These hormones cause the lining of the uterus (or womb) to build up. mensturation also signals that you're not pregnant. and when you're pregnant the mensturation cycle will stop for that period of time then return to normal after giving birth. mensturation cycle stops at the age of 45-55.