The time period through which the shedding of the uterine lining on a monthly basis occurs in a woman is known as
Menstruation is the time period in which a women's uterus prepares for reproduction and sheds the uterine lining approximately every 28 days, beginning from the age of 13 or 14 years to the age of between 45 to 55 years. Menstruation ends with menopause which is the point in time when the menstrual cycles permanently cease due to the natural depletion of ovaries with ageing.