The head is not any more mobile on the spinal column than any other two vertebrae are on each other. Fish can’t move its head independent of the body. Amphibians are the first vertebrates to have a ...

Requirements were for: *vertebrae with firm centra *intervertebral joints that could move or resist motion, depending on location, more intimate relationship between vertebral column and girdles In ...

Connective tissues consist of ligaments, cartilage and tendons. A joint is held together by ligaments which give the joints their stability. Cartilage is found at the ends of bones and where ...

The spinal cord travels inside the vertebral column constructed from the front by vertebrae, cushioned by the intervertebral ...