The nervous system contains the brain, brain stem, spinal cord, nerves outside the brain and spinal column (peripheral nerves), and muscle.
(The nervous system; contains; the brain, brain stem, spinal cord, nerves outside the brain and spinal column (peripheral nerves), and muscle)
The nervous system
contains
the brain, brain stem, spinal cord, nerves outside the brain and spinal column (peripheral nerves), and muscle