Control and Coordination

In the previous chapter we have studied about the various activities involved in the maintenance of life process. In this chapter, we will discuss “how our body controls these various activities”?. How do we coordinate and response to the external stimulus? There must be a system which provides the control and coordination activities in the multicellular organisms.

The ability of the organism to detect changes and make appropriate response is called sensitivity. Anything to which an organism responds and reacts is called a stimulus. Animals response to the stimulus either by moving towards it, or by moving away from it. Response and coordination in animals involve the sense organs, nervous system and hormones.