Chapter 18 – The Heart

1. Chapter 18 – The Heart I Wear My Heart on My Sleeve My Heart Bleeds for You Heartbreaker QRStions Have a Heart $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 FINAL ROUND

2. Have a Heart:$100 Question The region between the two pleural cavities that contains the heart and great vessels is called the ______? a. Mediastinum b. Visceral pericardium c. Parietal pericardium d. Pericardial cavity ANSWER BACK TO GAME

3. Have a Heart:$100 Answer The region between the two pleural cavities that contains the heart and great vessels is called the ______? a. Mediastinum b. Visceral pericardium c. Parietal pericardium d. Pericardial cavity BACK TO GAME

4. Have a Heart:$200 Question Which layer of pericardium touches the heart? a. Parietal pericardium b. Pericardial sac c. Fibrous pericardium d. Visceral pericardium ANSWER BACK TO GAME

5. Have a Heart:$200 Answer Which layer of pericardium touches the heart? a. Parietal pericardium b. Pericardial sac c. Fibrous pericardium d. Visceral pericardium BACK TO GAME

6. Have a Heart:$300 Question Which of the following is true of cardiac muscle tissue? a. Cardiac muscle cells are larger than skeletal muscle cells. b. Cardiac muscle is not striated. c. Cardiac muscle cells have intercalated discs. d. Cardiac muscle cells are multinucleate. ANSWER BACK TO GAME

7. Have a Heart:$300 Answer Which of the following is true of cardiac muscle tissue? a. Cardiac muscle cells are larger than skeletal muscle cells. b. Cardiac muscle is not striated. c. Cardiac muscle cells have intercalated discs. d. Cardiac muscle cells are multinucleate. BACK TO GAME

8. Have a Heart:$400 Question Why is the left ventricle more muscular than the right ventricle? a. Because it pumps a larger volume of blood. b. Because it contracts with force sufficient to push blood through the systemic circuit. c. Because the papillary muscles are stronger. d. Both A and B are correct. ANSWER BACK TO GAME

9. Have a Heart:$400 Answer Why is the left ventricle more muscular than the right ventricle? a. Because it pumps a larger volume of blood. b. Because it contracts with force sufficient to push blood through the systemic circuit. c. Because the papillary muscles are stronger. d. Both A and B are correct. BACK TO GAME

10. Have a Heart:$500 Question Where is the ANS headquarters for cardiovascular control? a. Cardiac plexus b. SA and AV nodes c. Medulla oblongata d. Cervical and upper thoracic ganglia ANSWER BACK TO GAME

11. Have a Heart:$500 Answer Where is the ANS headquarters for cardiovascular control? a. Cardiac plexus b. SA and AV nodes c. Medulla oblongata d. Cervical and upper thoracic ganglia BACK TO GAME

12. I Wear My Heart on My Sleeve:$100 Question What is the importance of the 100 msec delay at the AV node? a. Atria must contract before the ventricles. b. AV valves must have time to close. c. Contraction of papillary muscle must begin before ventricular contraction. d. Tachycardia results if the delay is absent. ANSWER BACK TO GAME

13. I Wear My Heart on My Sleeve:$100 Answer What is the importance of the 100 msec delay at the AV node? a. Atria must contract before the ventricles. b. AV valves must have time to close. c. Contraction of papillary muscle must begin before ventricular contraction. d. Tachycardia results if the delay is absent. BACK TO GAME

14. I Wear My Heart on My Sleeve:$200 Question Why is resting HR somewhat slower than the 80 – 100 bpm set by the SA node? a. The AV node slows the heart to an average between its own rate and that of the SA node. b. Parasympathetic innervation slows the HR. c. The AV node takes over causing the HR to be 40 – 60 bpm. d. None of these is correct. ANSWER BACK TO GAME

15. I Wear My Heart on My Sleeve:$200 Answer Why is resting HR somewhat slower than the 80 – 100 bpm set by the SA node? a. The AV node slows the heart to an average between its own rate and that of the SA node. b. Parasympathetic innervation slows the HR. c. The AV node takes over causing the HR to be 40 – 60 bpm. d. None of these is correct. BACK TO GAME

16. I Wear My Heart on My Sleeve:$300 Question How is Cardiac Output (CO) calculated? a. CO ml/min = (EDV – ESV) x SV b. CO ml/min = HR bpm x SV ml/beat c. CO ml/min = ESV/EDV d. A and B are correct. ANSWER BACK TO GAME

17. I Wear My Heart on My Sleeve:$300 Answer How is Cardiac Output (CO) calculated? a. CO ml/min = (EDV – ESV) x SV b. CO ml/min = HR bpm x SV ml/beat c. CO ml/min = ESV/EDV d. A and B are correct. BACK TO GAME

18. I Wear My Heart on My Sleeve:$400 Question What is happening during ventricular systole of the cardiac cycle? a. Rising atrial pressures push blood into the ventricles. b. All heart valves area closed and ventricles are relaxing. c. Both ventricular contraction and atrial diastole take place. d. Pressure in ventricles drops, which forces the semilunar valves closed. ANSWER BACK TO GAME

19. I Wear My Heart on My Sleeve:$400 Answer What is happening during ventricular systole of the cardiac cycle? a. Rising atrial pressures push blood into the ventricles. b. All heart valves area closed and ventricles are relaxing. c. Both ventricular contraction and atrial diastole take place. d. Pressure in ventricles drops, which forces the semilunar valves closed. BACK TO GAME

20. I Wear My Heart on My Sleeve:$500 Question When during the cardiac cycle do ventricles contain their maximal amount of blood? What is this quantity called? a. At the end of ventricular systole / ESV b. At the end of atrial systole / EDV c. At the end of ventricular diastole / EDV d. B and C are correct. ANSWER BACK TO GAME

21. I Wear My Heart on My Sleeve:$500 Answer When during the cardiac cycle do ventricles contain their maximal amount of blood? What is this quantity called? a. At the end of ventricular systole / ESV b. At the end of atrial systole / EDV c. At the end of ventricular diastole / EDV d. B and C are correct. BACK TO GAME

22. QRStions:$100 Question On an ECG reading, what does the P Wave indicate? a. Ventricular contraction b. An abnormal heart condition c. Atrial depolarization d. Atrial diastole ANSWER BACK TO GAME

23. QRStions:$100 Answer On an ECG reading, what does the P Wave indicate? a. Ventricular contraction b. An abnormal heart condition c. Atrial depolarization d. Atrial diastole BACK TO GAME

24. QRStions:$200 Question What event is taking place during the Q-T interval? a. A single cycle of the cardiac cycle b. An action potential c. A single cycle of atrial depolarization and repolarization d. A single cycle of ventricular depolarization and repolarization ANSWER BACK TO GAME

25. QRStions:$200 Answer What event is taking place during the Q-T interval? a. A single cycle of the cardiac cycle b. An action potential c. A single cycle of atrial depolarization and repolarization d. A single cycle of ventricular depolarization and repolarization BACK TO GAME

26. QRStions:$300 Question What factor could cause an increase in the size of the QRS complex of an electrocardiogram recording? a. An increase in heart rate b. A decrease in blood volume c. A decrease in blood pressure d. An increase in heart size ANSWER BACK TO GAME

27. QRStions:$300 Answer What factor could cause an increase in the size of the QRS complex of an electrocardiogram recording? a. An increase in heart rate b. A decrease in blood volume c. A decrease in blood pressure d. An increase in heart size BACK TO GAME

28. QRStions:$400 Question What condition contributes to a reduction in the size of the T wave? a. Long-term high fat intake b. Damage to the conduction pathway c. Damage to the AV node d. Coronary ischemia ANSWER BACK TO GAME

29. QRStions:$400 Answer What condition contributes to a reduction in the size of the T wave? a. Long-term high fat intake b. Damage to the conduction pathway c. Damage to the AV node d. Coronary ischemia BACK TO GAME

30. QRStions:$500 Question Why is there no wave corresponding to atrial repolarization on an ECG reading? a. It is masked by the QRS complex. b. Atrial repolarization produces no electrical effect at all. c. It is masked by the P Wave. d. None of these is correct. ANSWER BACK TO GAME

31. QRStions:$500 Answer Why is there no wave corresponding to atrial repolarization on an ECG reading? a. It is masked by the QRS complex. b. Atrial repolarization produces no electrical effect at all. c. It is masked by the P Wave. d. None of these is correct. BACK TO GAME

32. Heartbreaker:$100 Question Which of the following affect(s) the rate of venous return? a. Cardiac output b. Stroke volume c. Heart rate d. All of the above are correct. ANSWER BACK TO GAME

33. Heartbreaker:$100 Answer Which of the following affect(s) the rate of venous return? a. Cardiac output b. Stroke volume c. Heart rate d. All of the above are correct. BACK TO GAME

34. Heartbreaker:$200 Question How is eversion of the AV valves and backflow of blood into the atria prevented? a. Pressure of blood pushing against the valves b. Contraction of the ventricles c. Closure of the semilunar valves d. Tightening of chordae tendineae and contraction of papillary muscles ANSWER BACK TO GAME

35. Heartbreaker:$200 Answer How is eversion of the AV valves and backflow of blood into the atria prevented? a. Pressure of blood pushing against the valves b. Contraction of the ventricles c. Closure of the semilunar valves d. Tightening of chordae tendineae and contraction of papillary muscles BACK TO GAME

36. Heartbreaker:$300 Question Doris was born with a malformed pulmonary valve. How will that affect her circulation? a. Blood will flow more efficiently into her pulmonary trunk. b. Blood will regurgitate into her right atrium. c. Blood will flow back into her right ventricle. d. Deoxygenated blood will continuously pass around her systemic circuit. ANSWER BACK TO GAME

37. Heartbreaker:$300 Answer Doris was born with a malformed pulmonary valve. How will that affect her circulation? a. Blood will flow more efficiently into her pulmonary trunk. b. Blood will regurgitate into her right atrium. c. Blood will flow back into her right ventricle. d. Deoxygenated blood will continuously pass around her systemic circuit. BACK TO GAME

38. Heartbreaker:$400 Question Rick had a heart attack because of blockage of his right coronary artery. Which regions of his heart will be damaged by the blockage? a. SA node and AV node b. Interventricular septum and left atrium c. Portions of both ventricles d. A and C are correct. ANSWER BACK TO GAME

39. Heartbreaker:$400 Answer Rick had a heart attack because of blockage of his right coronary artery. Which regions of his heart will be damaged by the blockage? a. SA node and AV node b. Interventricular septum and left atrium c. Portions of both ventricles d. A and C are correct. BACK TO GAME

40. Heartbreaker:$500 Question How does damage to the cardioinhibitory center of the medulla affect heart rate? Why? a. Heart rate increases / Sympathetic dominance b. Heart rate decreases / Parasympathetic dominance c. Heart rate remains unchanged / Autonomic tone makes delicate adjustments d. Heart rate increases / Only the SA node will be controlling heart rate ANSWER BACK TO GAME

41. Heartbreaker:$500 Answer How does damage to the cardioinhibitory center of the medulla affect heart rate? Why? a. Heart rate increases / Sympathetic dominance b. Heart rate decreases / Parasympathetic dominance c. Heart rate remains unchanged / Autonomic tone makes delicate adjustments d. Heart rate increases / Only the SA node will be controlling heart rate BACK TO GAME

42. My Heart Bleeds for You:$100 Question Which blood vessels bring blood back into the right atrium from systemic circulation? a. Foramen ovale, pulmonary trunk, and ductus arteriosus b. Superior and inferior venae cavae c. Superior and inferior venae cavae and coronary sinus d. Aorta, pulmonary trunk, and pulmonary veins ANSWER BACK TO GAME

43. My Heart Bleeds for You:$100 Answer Which blood vessels bring blood back into the right atrium from systemic circulation? a. Foramen ovale, pulmonary trunk, and ductus arteriosus b. Superior and inferior venae cavae c. Superior and inferior venae cavae and coronary sinus d. Aorta, pulmonary trunk, and pulmonary veins BACK TO GAME

44. My Heart Bleeds for You:$200 Question What is the effect on heart rate of NE binding to beta-1 receptors? a. Increases rate of depolarization b. Decreases heart rate c. Increases heart rate d. A and C are correct. ANSWER BACK TO GAME

45. My Heart Bleeds for You:$200 Answer What is the effect on heart rate of NE binding to beta-1 receptors? a. Increases rate of depolarization b. Decreases heart rate c. Increases heart rate d. A and C are correct. BACK TO GAME

46. My Heart Bleeds for You:$300 Question Benjamin has an EDV of 120 ml, ESV of 45 ml, which gives him an SV of 75 ml. What is his ejection fraction? a. 45% b. 75% c. 37.5% d. 60% ANSWER BACK TO GAME

47. My Heart Bleeds for You:$300 Answer Benjamin has an EDV of 120 ml, ESV of 45 ml, which gives him an SV of 75 ml. What is his ejection fraction? a. 45% b. 75% c. 37.5% d. 60% BACK TO GAME

48. My Heart Bleeds for You:$400 Question Frank has just run a marathon and his heart is beating extremely rapidly. What happens to the length of diastole and filling time? a. Both increase b. Both decrease c. Length of diastole increases / filling time decreases d. Length of diastole decreases / filling time increases ANSWER BACK TO GAME

49. My Heart Bleeds for You:$400 Answer Frank has just run a marathon and his heart is beating extremely rapidly. What happens to the length of diastole and filling time? a. Both increase b. Both decrease c. Length of diastole increases / filling time decreases d. Length of diastole decreases / filling time increases BACK TO GAME

50. My Heart Bleeds for You:$500 Question Why is ESV lower when you are actively exercising? a. SV decreases and filling time increases. b. EDV is very low and ventricular muscle is stretched very little. c. EDV increases and ventricular muscle produces more forceful contractions ejecting more blood. d. Parasympathetic stimulation causes it. ANSWER BACK TO GAME