Ascending pain pathway is inhibited in dorsal midbrain by
Correct Answer: 5-HT (serotonin)
Description: The cell bodies of serotonin containing neurons are localized in the raphe nuclei of midbrain and brainstem. ... Serotonin therefore acts descending pathway to modulate spinal pain signals Ref: guyton and hall textbook of medical physiology 12 edition page number:699,700,701
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Physiology
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