1.  Simplified diagram showing the major pain pathways from the viscera to the central nervous system.
 Simplified diagram showing the major pain pathways from the viscera to the central nervous system. Note the inclusion of the dorsal columns whose role in visceral pain perception is becoming increasingly recognised. pACC, perigenual anterior cingulate cortex; MCC, midcingulate cortex.
P J Matthews, and Q Aziz Postgrad Med J 2005;81:
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