The vagina (Latin for “scabbard”) is the channel connecting the vulva to the cervix and uterus beyond. The cervix is a doughnut-shaped valve that stands between the vagina and the uterus. “Cervix” in Latin means “neck of the womb,” which is precisely what it is. It serves as a gatekeeper, deciding when to let substances (like sperm) in and when to let others (like blood during menstruation and babies during birth) out. Depending on the size of a man’s organ, the cervix is sometimes hit during sex, which some women find pleasurable and others find uncomfortable or painful.
