A cesarean section is an operation that delivers a baby through a cut in your abdomen and uterus. The uterus is the muscular organ at the top of the vagina.
Babies develop in the uterus, and menstrual blood comes from the uterus.
Babies are normally delivered from the uterus through the vagina. A baby in a breech position is one reason a cesarean section may be done. The breech position means that the baby is in a position where the bottom, knees, or feet will come out before the head in a delivery through the vagina. Such a delivery may be hazardous. For example, the baby's head may become trapped in the mother's cervix.