Because the head is the largest and least flexible part of the baby, it's best for it to lead the way into the birth canal. That way there's little risk the body will make it through but the baby ...

An examination of ancient and modern skeletal samples gathered from around the world reveals that the shape and size of the female birth canal varies widely among different human populations. These ...

Most birthing problems result from the baby coming out of the birth canal in an unusual way called malpresentation or abnormal presentation, fetus being large and getting stuck in the birth canal ...

Solomon: With more C-sections, that could lead to larger heads in our descendants because they wouldn't be constrained by the size of the birth canal ... time to push the baby out.

Her uterus was contracting at regular intervals and the fetus was oriented with its head downward in the birth canal. Doctors gave the patient spinal anaesthesia and performed an emergency cesarean ...