Uncommon Descent Serving The Intelligent Design Community

birth canal (human)

“Twisted” human birth canal “evolved” to be good design

Researchers: A longitudinally deeper inlet would require greater pelvic tilt and lumbar lordosis, which would compromise spine health and the stability of upright posture. These different requirements of the pelvic inlet and outlet likely have led to the evolution of a twisted birth canal, requiring human babies to rotate during birth. Read More ›