A patient in sickle cell crisis states that the pain is lessened when watching television. The patient's physiological response is best attributed to:
A. the perception of pain.
B. nociceptor stimulation.
C. a negative protective reflex response.
D. the application of the gate control theory.
D
Pain is perceived in the central nervous system (CNS). The CNS extracts information such as location, duration, and quality. Nociceptors, the receptors that respond to harmful stimuli, con-vert the original stimuli into a pain impulse (transduction). A positive protective response occurs with pain.
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