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the 3 main components
receptor, control center and effector
receptor
sense the stimuli send input to the control center
control center
sends output to the effector
effector
carries out the body's response to a stimulus, ultimately restoring balance within the body
response to stimuli
influences the stimuli by enhancing/ reducing it
negative feedback mechanism
negative feedback loops decreases/ reduces stimuli to make a system stable
positive feedback mechanism
Positive feedback loops increase/enhance stimuli to make a system unstable (becomes unstable before becoming stable)
example of negative feedback
regulating body temperature (thermoregulation), blood pressure, and blood sugar
example of positive feedback
blood clotting and child birth