11. Describe the structurat features of the ventricles. 12. Why is the heart referred to as a double pump? 13. Describe

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11 Describe The Structurat Features Of The Ventricles 12 Why Is The Heart Referred To As A Double Pump 13 Describe 1 (72.87 KiB) Viewed 38 times

11. Describe the structurat features of the ventricles. 12. Why is the heart referred to as a double pump? 13. Describe the location of the interventricular septum. 14. Why is the free wall of the left ventricle thicker compared to the right ventricular free wall? 15. What is the function of the valves of the heart? 16. Describe the location of each of the heart valves. 17. Which valves are associated with chordae tendineae and papillary muscles? 18. Describe the mechanics of the AV valves (How do the AV valves prevent the backflow of blood?). 19. Describe the operation of the semilunar valves. 20. What events are associated with the first and second heart sounds? 21. What is the function of coronary arteries and veins? 22. Describe the structure of cardiac muscle cells. 23. What are pacemaker cell? 24. What intercellular junctions are present in cardiac muscle tissue? 25. What is the function of desmosomes? 26. What is the significance of gap junctions? 27. Describe the property of autorhythmicity. 28. Identify and describe the phases of the action potential within pacemaker cells. 29. Identify and describe the components of the cardiac conduction system. 30. What part of the myocardium normally has the fastest rate of spontaneous depolarization? 31. Trace an excitatory impulse from the SA node throughout the conduction system of the heart. 32. What is the functional importance of the 0.1 second signal delay at the AV node? 33. Which portions of the myocardium are depolarized as the excitation impulse is conducted along the conduction system? 34. Identify and describe the phases of an action potential within a contractile cell.