title: [THE RELATIONSHIP BETWEEN THE DURATION OF THE ACTION POTENTIAL AND FREQUENCY OF STIMULATION IN THE CARDIAC MUSCLE CELL OF TORTOISE].
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium; D002136:Calcium, Dietary; D002463:Cell Membrane Permeability; D002712:Chlorides; D004558:Electric Stimulation; D004576:Electromyography; D004594:Electrophysiology; D006321:Heart; D007552:Isotonic Solutions; D032383:Myocytes, Cardiac; D010600:Pharmacology; D011188:Potassium; D011189:Potassium Chloride; D012104:Reptiles; D012106:Research; D012965:Sodium Chloride
chemical_list: D002136:Calcium, Dietary; D002712:Chlorides; D007552:Isotonic Solutions; D012965:Sodium Chloride; D011189:Potassium Chloride; D011188:Potassium; D002118:Calcium
keywords: CALCIUM; CELL MEMBRANE PERMEABILITY; CHLORIDES; ELECTRIC STIMULATION; ELECTROMYOGRAPHY; ELECTROPHYSIOLOGY; EXPERIMENTAL LAB STUDY; HEART; ISOTONIC SOLUTIONS; PHARMACOLOGY; POTASSIUM; POTASSIUM CHLORIDE; REPTILES; SODIUM CHLORIDE