There are three natural curves in the backbone. The cervical lordosis and the lumbar lordosis both curve toward the front of the body. The thoracic curve is toward the other direction.
2
one
The two curves in the skull are the coronal suture, which separates the frontal bone from the parietal bones, and the lambdoid suture, which separates the parietal bones from the occipital bone.
2
Beetle
3 curves
Presumably no curves at all.
There are four curves in the spine. They are the Cervical, Thoracic, Lumbar and Pelvic curves.
there are 3 curves
Some people call it "sway back."
Mammals are vertebrates and like all vertebrates have only one back bone . Back bone is made up of vertebrae .
what is the s shape section of the colon that curves back towards the rectum is called the