7 TH SCIENCE RESPONSE TO STIMULI REVIEW. STIMULUS: Anything that causes a reaction.

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Presentation transcript:

7 TH SCIENCE RESPONSE TO STIMULI REVIEW

STIMULUS: Anything that causes a reaction

RESPONSE: Reaction caused by internal or external stimuli

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

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

DEEP CUT = BRAIN PRODUCES ENDORPHINS (NATURAL PAIN KILLER)

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