Where does menstrual blood flow from?

Where does menstrual blood flow from?

Menstruation is usually the blood that flows out of the uterus.

Female menstruation is a normal physiological phenomenon. Generally, women begin to menstruate after entering puberty. This is mainly because as the ovaries gradually develop, estrogen will be secreted, and estrogen will act on the endometrium. The periodic shedding of the endometrium will form menstruation, which is one of the signs of mature female reproductive function. The endometrium will cause a small number of capillaries to rupture, so there will be bleeding symptoms, so menstruation flows out of the uterus and it will flow to the outside through the vagina.

Women may not have a particularly regular menstruation at the beginning, mainly because the feedback regulation between the hormones of the hypothalamus-pituitary-ovarian axis is not yet mature. Generally, regular menstruation will gradually form as the body develops. In addition to observing the menstrual cycle, women should also observe the menstrual volume. Usually, the menstrual volume is 20~60ml each time, and each menstrual period lasts about 3~7 days. Generally, after menopause, with the failure of ovarian function, menstruation will become disordered until it disappears.