What is menstruation part of?

Menstruation is part of the female reproductive cycle, specifically the menstrual cycle, which prepares the body for potential pregnancy each month. It involves the shedding of the uterine lining when pregnancy does not occur. This process is regulated by hormonal changes and typically lasts about 28 days, although it can vary among individuals. Menstruation is a natural biological function that signifies reproductive health and maturity in individuals with a uterus.