The adrenergic receptors of the coronary circulation in the isolated dog heart.

Adrenergic alpha-Antagonists/pharmacology Animals Constriction Coronary Vessels/drug effects,physiology Dilatation Dogs Drug Antagonism Epinephrine/pharmacology Female Heart Rate/drug effects In Vitro Techniques Isoproterenol/pharmacology Male Muscle Contraction/drug effects Myocardium Norepinephrine/pharmacology Phenoxybenzamine/pharmacology Phenylephrine/pharmacology Propranolol/pharmacology Receptors, Adrenergic Receptors, Drug Regional Blood Flow Vasomotor System/physiology

Adrenergic alpha-Antagonists Receptors, Adrenergic Receptors, Drug Phenoxybenzamine Phenylephrine Propranolol Isoproterenol Norepinephrine Epinephrine