AP BIOLOGY

Detailed explanation-1: -The effect of a given stimulus is the response. In the human body, the nervous system is the system that helps to detect and respond to various internal and external stimuli. A stimulus is defined as changes that are detectable either inside or outside of an organism.

Detailed explanation-2: -Final answer: The reaction to a stimulus is called response.

Detailed explanation-3: -A response is the behavior that is manifested by a living organism which is the result of an external or internal stimulus. A stimulus is anything that causes you to react, for example, the smell of food and your mouth watering. Responses are actions of the body: muscle contractions, gland secretions, or brain actions.

Detailed explanation-4: -Example of a stimulus and a response: If you accidentally touch a hot object, you automatically withdraw your hand. The heat of the hot object is the stimulus and you, withdrawing your hand is the response to the stimulus.