Medical Insights on Instagram: "Cervical Dilation: The Stages of Labor in PicturesCervical dilation during birth is the widening and thinning of the cervix, which happens during labor as uterine contractions push the baby's head down on the cervix, causing the muscle fibers to pull the cervix upward and outward. The cervix goes from long and closed to fully thinned out and open (10 centimeters) to allow the baby to pass into the birth canal and out of the body. The Process of Dilation1. Effaceme