Definition that contains birth canal
- presentation (obstetrics) position of the fetus in the uterus relative to the birth canal
- uterine contraction a rhythmic tightening in labor of the upper uterine musculature that contracts the size of the uterus and pushes the fetus toward the birth canal
- forceps delivery delivery in which forceps are inserted through the vagina and used to grasp the head of the fetus and pull it through the birth canal; since the forceps can injure the fetus this procedure has generally given way to cesarean deliveries
- ophthalmia neonatorum ophthalmia in newborns; contracted while passing through the birth canal; usually prevented with silver nitrate drops
- pelvimetry measurement of the dimensions of the bony birth canal (to determine whether vaginal birth is possible)