Quiz Week 02 - 1 of 16 In a short segment of an artery the...

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1 of 16 In a short segment of an artery, the lumen is narrowed due to atherosclerosis, reducing the diameter from 1 cm (proximal to the narrowed segment) to 0.5 cm (within the narrowed segment). If the velocity of flow proximal to the narrowed segment is 50 cm/sec, what is the velocity of flow within the narrowed segment (in cm/sec)? Assume that volume flow (in ml/sec) is constant. A. 12.5 B. 25 C. 50 D. 100 E. 200 Question 2 of 16 The above graph shows the changes in left ventricular volume during the cardiac cycle. Ventricular ejection occurs during the following time interval: A. 2 → 3 B. 3 → 4 C. 4 → 6 D. 5 → 6 E. 5 → 1 Question 3 of 16 The above graph shows the changes in left atrial pressure, left ventricular pressure, and aortic pressure during the cardiac cycle. Atrial systole occurs during the following time interval: A. 1 → 2 B. 2 → 3 C. 2 → 4 D. 3 → 5 E. 5 → 6 Question 4 of 16 The above graph shows the changes in left atrial pressure, left ventricular pressure, and aortic pressure during the cardiac cycle. The mitral valve is closed throughout the following time interval: A. 1 → 2 B. 2 → 5 C. 2 → 6 D. 3 → 5 E. 3 → 6 Question 5 of 16
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The above graph shows the changes in left atrial pressure, left ventricular pressure, and aortic pressure during the cardiac cycle. The most rapid period of ventricular filling occurs during the following time interval: A. 1 → 2 B. 2 → 3 C. 5 → 6 D. 6 → 7 E. 7 → 1 Question
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