NSCI 306 Exam 2 pathways

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4 Terms

1
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touch pathway

dorsal column → medulla (cross midline here; contralateral!) → thalamus → S1

2
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pain response

damaged cells release excitatory chemicals → action potential → substance P causes mast cells/blood vessels to release histamine → inflammation

3
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pain pathway

4
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analgesia

frontal cortex/cingulate cortex/hypothalamus → periaqueductal gray (PAG) → medulla → dorsal horn → interneurons release endogenous opioids