What your body does during childbirth is one of the most complex biological events in all of human medicine 😳🩺 It starts with contractions — coordinated waves of uterine muscle that gradually force the cervix to dilate from completely closed to 10 centimeters. As dilation progresses the baby actively rotates through the birth canal, its head tilting and turning to navigate the specific shape of the pelvis. Oxytocin surges drive stronger contractions. Pressure from the baby's head signals the b