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Physiology of pain

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Physiology Introduction Pain ° : defined is associated I short , chronic - without or - constant - Pain in survival ( as , within small with longer benefits Fast pain pain its From skin (2) From 131 ( • 41 face Dull - deeper - From From skin nerve First order Pelvic & - . by deeper ganglia pain by , - They which receptors . & localized . fibres type Unpleasant and type Nerve fibres nerve . & C : by Trigeminal are receive to : are . Nerve Vagus & Glossopharyngeal parasympathetic sacral which - bright sharp , diffused structures endings : As Thora w lumbar By region neurons sensation with structures carried Viscera From unpleasant first sensation - Pain sensation & . . carried Pathways of . intensities and different components Carried cbs slow area experience . sensation has two Pain ° , important protective an damage actual tissue sharp lasts ° and emotional unpleasant as with pain 1- Acute • Pain of Receptor distributed cells the spinal pain impulses . are . free throughout body posterior in cord og nerves og nerve pain . root sensation from fast ° Nucleus Marginal • ( by sensation pain As ) - Neurons form the gelatin Nucleus and or ca , fibres pain any Nuclei rg of lb , (c) ( ° di Ventral in these Thalamic : neurons . originate terminate Ventral Posterolateral in originate from pos ...
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