Getting a period is a natural and healthy process, when women shed their uterine lining. It is a natural biological process .it is a process in which blood and tissue from your uterus come out from your vagina. This usually happens one's a month. The onset of menstrual periods in girls is the body's way of preparing itself for a possible pregnancy. It is also known as menstruation. The ovaries are responsible for the release of the hormones, oestrogen, and progesterone. These female hormones signal the building up of the uterine lining or endometrium that nurtures a fertilized egg.
The same hormones signal the release of an egg from one of the ovaries during ovulation. This egg travels through the fallopian tube and attaches to the uterine lining – ready for fertilization. In the absence of a sperm cell to fertilize the egg, the uterine lining breaks down and is shed by way of a period.
This lining takes on an average of around 28 days to build up, break down, and eventually get shed. Most women experience a period cycle of anywhere between 21 to 35 days.
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