guyton chapter 9 part 1 of 3

0:00 Introduction 0:05 Heart has two seperate pumps 1:52 Physiology of Cardiac Muscle 2:45 Physiologic anatomy of cardiac muscle 3:05 Cardiac Muscle is Syncytium 6:13 Fibrous tissue separate two syncytia 6:37 Action Potential in Cardiac Muscle 7:31 Why Plateau forms in Cardiac Muscle but not in Skeletal Muscle 10:43 Summary of Phases of Action Potential 12:29 Velocity of Signal Conduction 13:03 Refractory Period of Cardiac Muscle 15:31 Excitation-Contraction Coupling 18:15 Role of ECF Calcium ions 18:39 Role of Calcium ATPase Pump 18:59 Duration of Contraction