Vagotonic action of carbon dioxide.
D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002245:Carbon Dioxide / Q000494:pharmacology*; D002339:Carotid Arteries / Q000294:innervation; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects*; D010424:Pentobarbital / Q000494:pharmacology; D012119:Respiration / Q000187:drug effects*; D014630:Vagus Nerve / Q000187:drug effects*
D002245:Carbon Dioxide; D001285:Atropine; D010424:Pentobarbital