Menstruation is the process in which a woman's uterus sheds its lining, and this shedding of lining, along with blood and tissue, exits the body through the vagina. Menstruation occurs as a result of the hormonal changes that take place in a woman's body during her menstrual cycle.
The menstrual cycle is controlled by the interplay of hormones produced by the hypothalamus, pituitary gland, and ovaries. These hormones control the growth and shedding of the lining of the uterus, as well as the growth and release of an egg from the ovary (ovulation).
During the first half of the menstrual cycle, the lining of the uterus thickens in preparation for pregnancy. If the egg is fertilized by sperm, it implants in the thickened lining, and pregnancy begins. If the egg is not fertilized, the lining of the uterus is shed, and this shedding is what causes menstruation.
The shedding of the lining of the uterus, along with blood and tissue, exits the body through the vagina, which is the process of menstruation. The menstrual cycle typically lasts around 28 days, but it can vary from person to person and can range from 21 to 35 days. The menstrual flow typically lasts between 2 to 7 days.
In summary, menstruation occurs as a result of the hormonal changes that take place in a woman's body during her menstrual cycle. It is the process in which the lining of the uterus is shed, along with blood and tissue, and exits the body through the vagina.
