In the females the limits of reproductive life are very sharp. It begins with the onset of puberty at at the age of of 12-13 years. The appearance of the first menstruation is called menarche. It causes with menopause (cessation of reproduction), at the age of 45-50 years.
The recurring ovarian cycles of about 28 days in the reproductive life of a female, accompanied by the release of usually one mature egg, capable of fertilization, are called menstrual cycles in menstruation.