A nurse is discussing an individual's conditioned or learned approach or avoidance behavior in response to pain. Which system is the nurse describing?
a. Sensory-discriminative system
b. Affective-motivational system
c. Sensory-motivational system
d. Cognitive-evaluative system
ANS: B
The affective-motivational system determines an individual's conditioned avoidance behaviors and emotional responses to pain. The sensory-discriminative system is mediated by the soma-tosensory cortex and is responsible for identifying the presence, character, location, and intensity of pain. The sensory-motivational system is not a system in the response to pain. The cogni-tive-evaluative system overlies the individual's learned behavior concerning the experience of pain and can modulate perception of pain.
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