Question

What is the work of brain. And stimuli define

Answer 1

brain contains three parts cerebrum ,cerebellum and medulla oblongata (brain stem).cerebrum is the center of thinking and intelligence, cerebellum maintan balance of body and brain stem controls involuntry action. brain work in systematic manner. stimulus is a change in environment of a body.

Answer 2

Explanation:

In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity.