Q. The term central nervous system refers to the
a. brain and spinal cord
b. autonomic and peripheral nervous systems
c. brain and cranial nerves
d. brain, spinal cord, and cranial nerves
The central nervous system is that part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS) is one of the two major divisions of the nervous system. The other is the peripheral nervous system (PNS) which is outside the brain and spinal cord.