The document summarizes the three stages of labor and delivery: 1) The dilation stage where the cervix thins and dilates as the uterus contracts, pushing the fetus onto the cervix. 2) The expulsion stage where, once fully dilated, the woman actively pushes to help expel the baby through the birth canal. 3) The placental stage where contractions continue until the placenta is delivered, ending the labor and delivery process.