Question

question: what is the mastery system of the body? what division is the brain and spinal cord in?

Explanation:

The nervous system is considered the mastery system of the body as it coordinates and controls all body functions. The brain and spinal cord are part of the central nervous system which is one of the two main divisions of the nervous system, the other being the peripheral nervous system.

Answer:

The nervous system is the mastery system of the body. The brain and spinal cord are in the central nervous system.