| central nervous system | (n) the portion of the vertebrate nervous system consisting of the brain and spinal cord, Syn. CNS, systema nervosum centrale |
| nervous system | (n) the sensory and control apparatus consisting of a network of nerve cells, Syn. systema nervosum |
| peripheral nervous system | (n) the section of the nervous system lying outside the brain and spinal cord, Syn. systema nervosum periphericum |