The central nervous system while the peripheral nervous system
a. the nerves that extend to the outlying parts of the body; spinal and cranial nerves
b. the brain and spinal cord; the nerves that extend to the outlying parts of the body
c..the nerves that extend to the outlying parts of the body, spinal and cranial nerves; brain and spinal cord
d. brain and spinal cord; the nerves that extend to the outlying parts of the body, spinal and cranial nerves.