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Prelim2_sample_2009

Prelim2_sample_2009 - INTRODUCTORY ANIMAL PHYSIOLOGY...

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INTRODUCTORY ANIMAL PHYSIOLOGY BIOAP3110/BIOMS3110/VTBMS3460 Fall 2009 PRELIM 2 SAMPLE EXAM 1. Which of the following would you expect to have the lowest threshold for excitation? A – SA node B – AV node The following 5 questions refer to the figure below.
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A = true B = false 2. The aortic valve opens at point F of the dashed pressure curve 1 . 4. Point G indicates the time in the cycle when the atrio-ventricular valves slam shut. 5. The T-wave of the EKG starts during interval A . 6. The slow decrease seen in dashed pressure curve 1 is due to a delayed compliance change. 9. During interval E the pressure in the left atrium is greater than that in the pulmonary vein. The following five (5) questions refer to the figure below. A = true B = false 10. Curve segment A indicates the ventricular pressure change during the period of ventricular emptying.
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11. The change in pressure indicated by line segment C is associated with diastole . 12. The decrease in the ventricular pressure curve seen between points D and E is due to decreased calcium influx into the cardiac myocytes. 13. A shift from curve G to curve H would be expected if the compliance of the ventricles increased . 14. An increase in the area identified as EW would be expected if the aortic resistance decreased . The following question refers to the graph below. A = true B = false 15. If the solid curve A represents ‘ Frank-Starling’ data from the left ventricle, the dashed curve B could represent data from the right ventricle.
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