Question

The human nervous system is broken up into central and peripheral parts. The central system (CNS) is made up of _____.

sensory and motor neurons
the brain and motor neurons
the brain and spinal cord

Answer 1

c

Step-by-step explanation:

Answer 2

c

Step-by-step explanation:

The CNS is made up of the brain and spinal cord

the brain weighs .2% body weight

15% blood

20%oxygen