The ovaries produce the cells destined to become ova (eggs) and sex steroids. A released oocyte moves into the uterine tube also known as the oviduct or Fallopian tube where it may be fertilized if sperm are present. If fertilized, it completes meiosis and becomes an ovum. If an embryo results, it will burrow into the lining of the uterus to complete its development. The cervix is the opening from the uterus into the vagina. The vagina is the canal for entry of the penis and exit of menstrual flow and serves as the birth canal.