Question

How do upper body act in response to certain stimuli?

Answer 1

The CNS consists of the brain and the spinal cord. It gathers information about, and responds to, changes in the environment. 

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Answer 2

HEY BUDDY HERE IS UR ANSWER !!

》A withdrawal reflex starts when sensory nerves in your skin receive a stimulus from outside the body.

》 That stimulus starts a nerve impulse alongthe cell membrane. Your emotions, decisions, and physical actions all happen through nerve impulses traveling through neurons in your brain, spinal cord and nerves.

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》》 BE BRAINLY 《《