LO3-_Heart_LO - 17 What is autorhythmicity 18 Know the...

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Chapter 18 (Heart) Learning Objectives Due Thursday, April 22 nd 1. What directions (relative to the heart) do arteries and veins carry blood? 2. What is the function of the pulmonary circuit? The systemic? 3. Name the major chambers of the heart and the function of each. 4. What is the pericardium and what is its function? 5. Define pericarditis. 6. What are the layers of the heart wall? 8. Define angina pectoris and MI. 9. Describe congestive heart failure. 10. What are the histological characteristics of cardiac muscle cells? 11. Draw a flow diagram of the path blood takes, starting from and ending at the left ventricle. 12. What are the two types of cardiac cells? 13. What are the major differences between the contractile cells of the heart and skeletal muscle? 14. What is the significance of the plateau phase seen in the action potential of cardiac muscle cells. 15. Why are cardiac muscle cells not in grave danger from lack of nutrition? 16. What are the intrinsic and extrinsic factors controlling the heart beat?
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Unformatted text preview: 17. What is autorhythmicity? 18. Know the sequence of events of an action potential in the pacemaker cells of the heart. 19. What is the mechanism of action of Ach on the heart muscle? 20. What is the mechanism of action of norepinephrine on heart rate? 21. Draw a flow diagram of the conduction system of the heart starting at the SA node. 22. What is the difference between bradycardia and tachycardia? 23. What do the P, QRS, R, and T waveforms represent? 24. What does an abnormal S-T interval indicate? What does a prolonged Q-T interval indicate? 25. Define systole and diastole. 26. What is cardiac output? 27. Define the following: EDV, ESV, SV, ejection fraction, preload, and afterload. 28. Briefly describe the factors that affect heart rate. 29. Know the factors that are involved in regulation of cardiac output as depicted on page 686. 30. What is the arterial (Bainbridge) reflex? 1...
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