Answer:
the central nervous system and the peripheral nervous system
Explanation:
The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
LOL IKR
The answer would be A
I took the test last year
what do you mean don't understand
you're not telling good information
They fight against infections and disease.
