Massaging the skin or application of an irritant to the skin can suppress the transmission of pain signals from the corresponding body area by suppressing the sensory fibers transmitting the pain signal. Which of the following best describes this phenomenon?
A) Release of enkephalin from local neurons in the spinal cord
B) Presynaptic and postsynaptic inhibition of type C fibers by serotonin
C) Lateral inhibition of pain fibers by tactile fibers from adjacent skin areas
D) Activation of periaqueductal gray neurons
Correct Answer:
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Q1: Which substance is responsible for activating pain
Q2: All the following stimuli are likely to
Q4: The highest degree of pain localization
Q5: Which of the following is paired correctly?
A)Dorsal
Q6: The neospinothalamic tract transmits which of the
Q7: Which of the following sensory modalities uses
Q8: Neurons located in which of the following
Q9: Neurons involved with the endogenous analgesia system
Q10: Referred pain results from an intermingling of
Q11: Slow pain (also called second pain) often
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