The effect of catecholamines on the membrane resistance and spike generation in the smooth muscle of guinea-pig taenia coli.

Animals Biological Transport, Active/drug effects,physiology Calcium/physiology Cell Membrane/physiology Chlorides/physiology Electric Conductivity Electric Stimulation Epinephrine/pharmacology Guinea Pigs In Vitro Techniques Intestine, Large/physiology Membrane Potentials/drug effects Muscle Contraction Muscle, Smooth/physiology Nitrates/pharmacology Norepinephrine/pharmacology Phentolamine/pharmacology Potassium/physiology Propranolol/pharmacology Sulfonic Acids/pharmacology

Chlorides Nitrates Sulfonic Acids Propranolol Potassium Calcium Norepinephrine Epinephrine Phentolamine