Negative dromotropic response to phenylephrine blocked by phenoxybenzamine.
D000109:Acetylcholine / Q000494:pharmacology; D000526:Alprenolol / Q000494:pharmacology; D000818:Animals; D001532:Atropa belladonna / Q000494:pharmacology; D004285:Dogs; D006329:Heart Conduction System / Q000187:drug effects*; D066298:In Vitro Techniques; D009638:Norepinephrine / Q000494:pharmacology; D010643:Phenoxybenzamine / Q000494:pharmacology*; D010656:Phenylephrine / Q000037:antagonists & inhibitors*; D010946:Plants, Medicinal; D010947:Plants, Toxic
D010643:Phenoxybenzamine; D010656:Phenylephrine; D000526:Alprenolol; D000109:Acetylcholine; D009638:Norepinephrine