BME365R_exam3_2007solutions

BME365R_exam3_2007solutions - Name Exam 3 Quantitative...

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Name: __________________________________ Exam 3 Quantitative Physiology - BME 365R December 5, 2007 You are allowed use of a scientific calculator. Exam is closed notes and no communication with any neighboring or outside entity is allowed. Multiple Choice Questions (3 points each). In each of the following questions choose the best answer. Consider the following pressure volume loop for the left ventricle. 1. During the B to C segment, A. Only the mitral valve is open B. Only the aortic valve is open C. Both valves are closed D. Both valves are open E. None of the above 2. During the C to D segment, A. Only the mitral valve is open B. The mitral and aortic valve are open C. Only the aortic valve is open D. Both the aortic and mitral valves are closed E. None of the above
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Name: __________________________________ 3. The vertex corresponding to end systolic volume is A. Vertex A B. Vertex B C. Vertex C D. Vertex D E. None of the above 4. The stroke volume for the left ventricle is A. 130 ml B. 60 ml C. 70 ml D. 90 mmHg E. None of the above 5. If the heart in the pressure-volume loop is beating at 60 beats/min, the cardiac output is A. 7.8 L/min B. 3.6 L/min C. 4.2 L/min D. Need more information E. None of the above 6. Assume the heart is beating at 60 beats/min, the power provided by the left ventricle is A. 560 mmHgml/s B. 840 mmHgml/s C. 540 mmHgml/s D. 700 mmHgml/s E. None of the above 7. Assume the heart rate is 60 beats/min, the power in watts provided by the left ventricle is (assume that 1mmHg = 133.3 Pascals) A. 0.09 W B. 0.075 W C. 0.111 W D. None of the above 8. 2. During the D to A segment, A. Only the aortic valve is open B. Only the mitral valve is open C. Both the aortic and mitral valves are open D. Both the aortic and mitral valves are closed E. None of the above The cardiovascular unit for compliance is:
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Name: __________________________________ A. mmHg/ml B. ml/mmHg C. m 3 /Pascal D. None exist E. None of the above 9. The cardiovascular unit for resistance is A. mmHg · s/ml B. ml/(mmHg · s) C. Ohms D. None exist E. None of the above 10. The units of viscosity in the CGS system (centimeters-grams-seconds) is A. centi-Poise or cP B. Poise C. milli-Poise D. None exist E. None of the above 11. The mathematical relationship we derived in class with the algebraic form , 2 r dz dP rz = τ A. Is valid only for a Newtonian fluid B. Is valid for only a Casson fluid C. Is valid for both a Newtonian and Casson fluid D. Is not generally valid for either a Casson or Newtonian fluid E. None of the above 12. Consider blood flowing in a blood vessel, the shear stress is A. Greatest along the center-line of the vessel B.
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BME365R_exam3_2007solutions - Name Exam 3 Quantitative...

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