3D Illustration Of Spine - Part Of Human Organic. Stock Photography

The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla obligation in the brain stem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrovascular fluid. The brain and spinal cord together make up the central nervous system . In humans, the spinal cord begins at the occidental bone, passing through the foreman magnum and entering the spinal canal at the beginning of the cervical vertebrae.