pain pathway

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Last updated 4:03 AM on 4/9/26
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8 Terms

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C and A delta neurons

Sends nociceptive (pain) info from environment to spinal cord

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Spinal cord

Releases glutamate and substance P on neurons in spinothalammic pathway

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Spinothalamic pathway

Sends nociceptive info to thalamus

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Thalamus

Nociceptive info then goes to somatosensory cortex - processes info

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Somatosensory cortex

Sends info to limbic system and cingulate cortex

  • approach/avoid behavior (do i need to flee?)

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Limbic system

Sends info to amygdala - emotional response

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Opioids reduce

Glutamate and substance P

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No pain

Take heroin before being bitten by dog, glutamate and substance P isn’t released