The vagina is a muscular canal that connects the uterus to the outside of the body. Its main functions include:
1. Serving as the birth canal for delivering a baby during childbirth. 2. Allowing for the passage of menstrual blood during menstruation. 3. Providing a pathway for sperm to enter the uterus during sexual intercourse for fertilization to occur. 4. Producing lubrication to facilitate comfortable sexual intercourse. 5. Acting as a protective barrier against infections by maintaining a healthy balance of bacteria and acidity levels.