Once a decision has been reached by the central portion, there is an output of
commands to the effector organs (muscles and/or glands).
c. There are various control systems to be found within the body. Of these, the
nervous system is the most rapid and precise in responding to specific situations.
Section II. THE CENTRAL NERVOUS SYSTEM
a. Centrality. The central nervous system (CNS) (Figure 12-2) is central in
both location and function.
Figure 12-2. The human central nervous system (CNS).