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UKCD Referrred Pain
learning objectives for referred pain
Question | Answer |
---|---|
What specific fibers are responsible for relaying pain from the viscery? | Visceral afferent fibers. |
Trace the pathway of these fibers from the viscera into the CNS. | target organ ->visceral afferent fiber ->prevertebral ganglion -> splanchnic n. ->sympathetic (paravertebral) ganglion->white ramus communicans ->ventral ramus _> dorsal root (where cell body of this fiber resides in the dorsal root (spinal) ganglion). |
Along what structure is this visceral pain referred and where is it felt? | The pain is referred out along the ventral ramus this fiber briefly travels in and is felt in the dermatome supplied by this ventral ramus. |
What is meant by proximal-distal referred pain? | The injury is proximal to the CNS but the pain is felt distal from the site of injury. |