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nociceptor
(redirected from Pain fibers)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
nociceptor [′nō·sə‚sep·tər]
(physiology)
A sensory nerve ending that is particularly sensitive to noxious stimuli such as chemical changes in surrounding tissue evoked by injury.


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In certain cases with prolong pain stimulation, excitation of pain fibers increases leading to a condition known as hyperalgesia.
Theories include the formation of new blood vessels or perhaps damage to sensory pain fibers.
Pain fibers (green) of the same class follow a similar pathway.
 
 
 
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