Which among the following is/are not a function of the vagina?
1. Provide a passageway for blood and mucosal tissue from the uterus during a woman's monthly period
2. Receives the penis during sexual intercourse and holds the sperm until they travel into the uterus
3. Provides a passageway for childbirth
4. Provides a passageway for the expulsion of the faeces or residual waste