The begin to understand how the baby maneuvers out of the pelvis you will need to know a bit about the fetal skull. The bones of your baby's head are not yet fused, this allows the bones to overlap as your baby makes it's way through the pelvis at the end of pregnancy and labor. The lines are called suture lines and also show the fontanelles or soft spots of the baby's skull. The front of the baby's head is the anterior portion and the back is the posterior portion.




