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3 Input: Information sent along afferent pathway to control center. 2 Receptor Receptor Control Center Afferent pathway Efferent pathway 1 Stimulus © 2012 Pearson Education, Inc. sent along efferent pathway to effector. Effector 5 Response detects change. produces change in variable. 4 Output: Information VARIABLE (in homeostasis) of effector feeds back to reduce the effect of stimulus and returns variable to homeostatic level. Figure 1.4, step 5
