Which statement is not true about pain?
a. There are two known endogenous analgesia systems in humans.
b. Transmission of visceral pain impulses is faster than for impulses from cutaneous pain.
c. Internal organs are very sensitive to disten-sion.
d. Ischemic pain onsets rapidly in an active muscle.
B
There are two known endogenous analgesia systems in humans. Visceral pain is less localized and more slowly transmitted than is cutaneous pain. Internal organs have extreme sensitivity to distension. Ischemic pain has the most rapid onset in an active muscle and a much slower onset in a passive muscle.
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