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negative feedback
primary mechanism to maintain homeostasis
reverses a change when variable is too far from set point
steps to negative feedback (4)
stimulus causes change in controlled variable
receptors detect change
control center processes info
effectors act to bring variable back to normal
sensor (receptor)
detects change
monitors a variable
effector
carries out response to correct change
equalibrium
opposing forces/influences are perfectly balanced
no net change is occuring