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7 TH SCIENCE RESPONSE TO STIMULI REVIEW

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STIMULUS: Anything that causes a reaction

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RESPONSE: Reaction caused by internal or external stimuli

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INTERNAL STIMULUS: A STIMULUS THAT COMES FROM INSIDE THE BODY OF AN ORGANISM

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External stimulus A signal (stimulus) that originates from outside an organism o Examples:

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DEEP CUT = BRAIN PRODUCES ENDORPHINS (NATURAL PAIN KILLER)

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DEVELOPING A FEVER DUE TO AN ILLNESS OR INFECTION IS OUR BODYS INTERNAL FEEDBACK MECHANISM THAT RESPONDS TO ALLOW US TO MAINTAIN BALANCE.