Comparative Physiology of the Heart: Current Trends : Proceedings of a Symposium Held at Hanover, New Hampshire (USA) on 2 to 3 September 1968

Front Matter....Pages 1-8 Introduction....Pages 9-9 The Structure and Function of the Intercalated Disc in Vertebrate Cardiac Muscle....Pages 10-28 Ultrastructure and Function in an Insect Heart....Pages 29-46 Functional Correlates of Fine Structure in the Heart of Achatinidae....Pages 47-68 Theory of Step-Wise Excitation in Gastropod Hearts....Pages 69-77 The Energy Output of Normal and Anoxic Cardiac Muscle....Pages 78-92 Introduction....Pages 93-101 Electrical Transmission between the Cells of Vertebrate Cardiac Muscle....Pages 102-110 Spread of Excitation and Injected Current in the Tunicate Myocardium....Pages 111-134 Lack of Electrical Coupling between Contiguous Myocardial Cells in Vertebrate Hearts....Pages 135-165 Neuromuscular Transmission in the Heart of the Lobster Homarus americanus ....Pages 166-168 A Study of the Active State in Molluscan Ventricular Muscle....Pages 169-172 Introduction....Pages 173-173 Electrical Recording from Embryonic Heart Cells Isolated in Tissue Culture....Pages 174-175 Effects of Na + and Ca ++ on the Spontaneous Excitation of the Bivalve Heart Muscle....Pages 176-191 Patterns of Reversal in the Heart of Ciona Intestinalis L.....Pages 192-199 Observations on the Neural Rhythmicity in the Cockroach Cardiac Ganglion....Pages 200-205 Initiation of Activity in the Cockroach Heart....Pages 206-218 Introduction....Pages 219-219 Localization and Mode of Action of Cardioexcitatory Agents in Molluscan Hearts....Pages 220-231 Physiological and Pharmacological Properties of Limulus Heart....Pages 232-243 The Role of Small Potentials in the Regulation of Rhythm in an Oyster Heart....Pages 244-249 The Role of Isoreceptors in the Neurohormonal Regulation of Bivalve Hearts....Pages 250-265 Conclusion and Summary of the Proceedings....Pages 266-270