PATHOLOGY

Detailed explanation-1: -A stimulus is a change in the environment (either external or internal) that is detected by a receptor. Receptors transform environmental stimuli into electrical nerve impulses. These impulses are then transmitted via neurons to the central nervous system where decision-making occurs.

Detailed explanation-2: -A stimulus causes an action or response, like the ringing of your alarm clock if you didn’t sleep through it. Stimulus is a word often used in biology-something that causes a reaction in an organ or cell, for example.

Detailed explanation-3: -Stimulus is an event or any change in the external environment that evokes a specific functional reaction in an organ or tissue. stimulus can be internal or external. Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch.