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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

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gshreya2005

Answer:

c

Explanation:

The CNS is made up of the brain and spinal cord

the brain weighs .2% body weight

15% blood

20%oxygen

Answer:

c

Explanation:

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