Question

Why does MENSTRUATION occur?????​

Answer 1

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Menstruation is a normal event occurring in women wherein there is normal vaginal bleeding and is a part of a healthy woman’s monthly cycle. A healthy woman undergoes this cycle which lasts for 28 days until she hits menopause. It occurs as it readies the body for pregnancy every month through menstruation wherein the uterus lining thickens for the embryo to get embedded once the egg is released from the ovaries. In the event of fertilization, the future fetus would rest here until childbirth. But if there is no such event, this uterus lining tears leaking through the vagina in the form of menses. This lasts for about 2-7 days. If there is no fertilization, there is a dip in the levels of progesterone and estrogen finally touching a level which signals the body to begin menstruation. Periods are a way by which women release tissues which are no longer needed.

Answer 2

Menstruation occurs in females when the egg produced inside the cervix is not fertilized. Since the egg does not fuse with the male gamete, so the thick and soft lining of uterus having a lot of blood capillaries in it are not required