Morphine interference with noradrenaline-mediated inhibition from the locus coeruleus.
D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002415:Cats; D002540:Cerebral Cortex / Q000187:drug effects; D002552:Cerebral Ventricles / Q000187:drug effects* / Q000378:metabolism; D005260:Female; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009269:Nalorphine / Q000494:pharmacology; D009638:Norepinephrine / Q000037:antagonists & inhibitors* / Q000378:metabolism / Q000494:pharmacology; D014276:Trigeminal Nerve / Q000187:drug effects
D009020:Morphine; D009269:Nalorphine; D009638:Norepinephrine