The vagina is an elastic, muscular canal with a soft, flexible lining that
provides lubrication and sensation. The vagina connects the uterus to the
outside world. The vulva and labia form the entrance, and the cervix of
the uterus protrudes into the vagina, forming the interior end.
The vagina receives the penis during sexual intercourse and also serves as a
conduit for menstrual flow from the uterus. During childbirth, the baby passes
through the vagina (birth canal).
The hymen is a thin membrane of tissue that surrounds and narrows the
vaginal opening. It may be torn or ruptured by sexual activity or by