QUESTIONS 9.
The Nervous system is divided into two (2) systems
a. Identify these two (2) systems
b. One of these systems breaks down into two divisions - Name these divisions

central nervous system & peripheral nervous system

Explanation:

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

9.

a. Central and Peripheral systems

b. The Peripheral system is divided into the Sensory division and the Motor division.

Explanation:

I believe these are the answers you are looking for; however, there are other 'parts' of the Nervous system.

proteins is the answer