This document summarizes the key aspects of the female reproductive system. It describes puberty in females, which occurs between ages 10-14 and is marked by the onset of menstruation. It then outlines the physiological changes that occur during puberty including maturation of the ovaries, uterus, breasts and growth of pubic hair. The document further explains the menstrual cycle, which occurs approximately every 28 days and involves the follicular, ovulation, luteal and menstrual phases. It describes menopause which occurs around age 45 and is caused by a change in sex hormone concentrations, leading to cessation of menstruation and other physiological changes.