In delivery, a baby and placenta are delivered from the uterus through the vagina. During pregnancy, the baby is in the uterus and the child's navel is connected to the placenta in the uterine body by the umbilical cord. Delivery is divided into three stages, and the flow is as follows. 1. Labor pains start and the cervix dilates to 10 cm. In the first stage, the cervix continues slowly to about 6 cm. It then dilates at a rate of 1.2 to 1.5 cm per hour during the active phase. 2. After cervical dilation, the baby descends into the vaginal canal with or without maternal pushing efforts. The baby passes through the birth canal through seven movements: engagement, descent, flexion, internal rotation, extension, external rotation, and expulsion. 3. The third stage is from the time the fetus is delivered until the placenta is delivered.