title: [Descending inhibition from mesencephalic ventromedial periaqueductal gray upon viscero-intercostal reflex].
mesh_terms: D000818:Animals; D002415:Cats; D007367:Intercostal Nerves / Q000502:physiology*; D008636:Mesencephalon / Q000502:physiology*; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009433:Neural Inhibition / Q000187:drug effects; D012018:Reflex / Q000187:drug effects; D013153:Splanchnic Nerves / Q000502:physiology*; D013900:Thoracic Nerves / Q000502:physiology*
chemical_list: D009270:Naloxone; D009020:Morphine