The major parts of the female reproductive system include the ovaries, fallopian tubes, uterus, vagina, cervix, and vulva. The ovaries produce eggs and release them monthly during ovulation if not fertilized. A woman is born with around 1-2 million eggs, though only around 400 will be released over her lifetime. Common diseases of the uterus include cesarean section, endometriosis, gonorrhea, hysterectomy, pelvic inflammatory disease, preterm labor, and uterine cancer. The female reproductive system is also called the female genital system. The vagina is also referred to as the birth canal during pregnancy.