41. Doctors believe it protects the skin in utero and lubricates the baby for the journey down the birth canal . 42. The birth canal is only a few inches long, but in my mind it might as well be miles. 43. Newborn babies coming through the birth canal are given erythromycin ointment in the eyes to prevent blindness from infection. 44. Several methods of contraception, including cervical caps and dilate to allow the fetus to progress along the birth canal . 45. The baby got stuck by the shoulders in the birth canal and the doctors were unable to extract him. 46. The nearly fully-formed fetus is pulled, feet first, through the birth canal until all but the head has been delivered. 47. The procedure involves partially extracting a fetus, legs first, through the birth canal , cutting the skull and draining its contents. 48. Veterinarians, who discovered the dead calf during a surgical procedure Saturday, could not remove the fetus via the birth canal . 49. This separates from the wall of the uterus during labor and the fetus works its way towards the birth canal . 50. The fetal head may temporarily change shape substantially ( becoming more elongated ) as it moves through the birth canal .
