This set of seven anatomical cross-sectional pelvic models demonstrates the major stages of childbirth, from labor through delivery. The stages represented are: (A) the fetal head settling into the pelvic inlet, (B) the first stage of labor with irregular uterine contractions, (C) dilation of the cervix, (D) presentation of the head, (E) delivery and rotation of the baby's head, (F) the afterbirth and placenta, and (G) strong contractions expelling the placenta. Each stage has a description on the bottom left. The models are hand painted with detailed anatomical features and mounted on a solid 18 x 14-inch base.