Ventricular contractility: suppression by vagal stimulation and propranolol.
D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects*; D006352:Heart Ventricles / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology*; D014628:Vagotomy; D014630:Vagus Nerve / Q000502:physiology*
D001285:Atropine; D011433:Propranolol; D009638:Norepinephrine