Ruch, Theodore C. Regional Primate Research Center; Department of Physiology and Biophysics, University of Washington, Seattle, Washington.
Patton, Harry D. Department of Physiology and Biophysics, School of Medicine, University of Washington, Seattle, Washington.
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Those organ systems of the animal body which mediate overt behavior. Injury to an effector system leads to loss or to subnormal execution of behavior patterns mediated by the system, conditions termed paralysis and paresis, respectively.
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