1. Stroke volume is most proportion to 1. 2. 3. 4. 5. systolic pressure diastolic pressure mean arterial pressure pulse pressure * venous pressure 2. The second heart sound is generated by the 1. 2. 3. 4. 5. closing of the tricuspid valve closing of the mitral valve closing of the semilunar valves * turbulent flow in the femoral artery turbulent flow in the carotid artery 3. A subjects’ heart rate is 40 beats/minute and stroke volume is 50 ml/beat. Her/his cardiac output would be? 1. 2. 3. 4. 5. 6000 ml/min 5000 ml/min 4000 ml/min 3000 ml/min 2000 ml/min * 4. The QRS complex of the electrocardiogram ? 1. 2. 3. 4. 5. precedes the SA node depolarization precedes the 1st heart sound occurs at the same time as ventricular contraction occurs at the same time as atrial contraction occurs at the same time as systolic ejection 5. Which of the following volumes is the largest? 1. 2. 3. 4. end systolic atrial end diastolic * stroke 6. If you were to design a drug to lower blood pressure, one possible mechanism by which it could accomplish this would be? 1. 2. 3. 4. 5. increase heart rate increase stroke volume induce arterial vasodilation * decrease blood flow to the stomach stimulate the sympathetic nervous system 7. The best order of the cardiac events listed below is? a. b. c. d. e. f. g. 1. 2. 3. 4. 5. Ventricular contraction Atrial contraction Mitral valve closure P wave QRS complex Semilunar valve closure Systolic ejection d-b-c-e-a-f-g b-d-a-e-c-f-g d-b-e-c-a-g-f * e-b-d-c-f-g-a f-e-b-e-a-d-g 8. The diagram below is that of the membrane potential of a cardiac muscle cell during contraction. During which phase is the K+ permeability of the membrane increased and the C2+ permeability of the membrane decreased? 1. 2. 3. 4. 5. phase 0 phase 1 phase 2 phase 3 * phase 4 9. The first heart sound is generated by the closing of the? 1. tricuspid valve 2. mitral valve 3. semilunar valves 4. tricuspid and mitral valve * 5. venous valves 10. The QRS complex of the electrocardiogram ? 1. occurs in the perkinje fibers 2. precedes the 1st heart sound * 3. occurs at the same time as ventricular contraction 4. occurs at the same time as atrial contraction 5. occurs during systolic ejection 11. In the figure below the fluid entering the sprinkler head is at a constant pressure, which of the outputs will have the lowest resistance? 1 2 3 P 4 5 1. 1 2. 2 3. 3 4. 4 5. 5* 12. In the electrocardiogram shown below, the double headed arrow represents which of the following? 1. 2. 3. 4. 5. ST segment * QT interval PR segment QRS complex T wave 13. In the electrocardiogram below the most abnormal characteristic is? 1. 2. 3. 4. 5. the rate is to slow there are no P waves there are no QRS Complxes the R-R interval are variable (different)* this ECG is essentially normal Use the diagram below to answer question 14 through 17(1 point each). C B D E A 14. Which of the arrows points to the pulmonary artery? 1. 2. 3. 4. 5. A B C D* E 15. Which of the arrows points to the left atrium? 6. A 7. B 8. C 9. D * 10. E 11. 16. Which of the arrows points to the aorta? 12. A 13. B 14. C* 15. D 17. Which of the arrows points to the right ventricle? 16. A 17. B* 18. C 19. D 20. E For question 18 through 21 use the diagram below(1 point each). C A D B E 18. Which arrow points to the intra ventricular septum? 1. 2. 3. 4. A B C D 5. E* 19. Which arrow points to the intra pappilary muscle? 1. 2. 3. 4. 5. A B* C D E 20. Which arrow points to the intra semi lunar valve? 21. A 22. B 23. C* 24. D 25. E 21. Which arrow points to the intra tricuspid valve? 1. 2. 3. 4. 5. For questions 22 A* B C D E and 23 use the diagram below. E Volume A B C Time D 22. Which letter denotes the time of atrial contraction? 1. 2. 3. 4. 5. A B C D E 23. Which letter denotes the time of isovolumetric relaxation? 1. 2. 3. 4. 5. A B C D E Use the diagram below to answer Questions 24 through 27. Pressure A r e Ds rs eu s Er s re ue Time rs es u r e C r e s s u r e B r e s s u r e 24. Which arrow points to aortic pressure? 1. 2. 3. 4. 5. A B C D E 25. Which arrow points left ventricular pressure? 6. A 7. B 8. C 9. D 10. E 26. Which arrow points to the closure of the mitral valve? 11. A 12. B 13. C 14. D 15. E 27. Which arrow points to the diastolic blood pressure? 16. A 17. B 18. C 19. D 20. E