central nervous system 
noun Anatomy
The complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord.MS is a disease of the central nervous system that affects the brain and spinal cord....
- Studies in the mid-1970s showed workers exposed to vinyl chloride suffered an excessive number of cancer deaths from cancer of the liver, lung, lymphatic and central nervous systems, including brain tumors.
- The sphingomyelin content is also high in the central nervous system and in the spinal cord.