BRS CARDIOVASCULAR PHYSIOLOGY EXAM QUESTIONS AND VERIFIED ANSWERS
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BRS PHYSIOLOGY
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BRS PHYSIOLOGY
BRS CARDIOVASCULAR PHYSIOLOGY EXAM QUESTIONS AND VERIFIED ANSWERS
1. A 53-year-old woman is found, by arteriography, to have 50% narrowing of her left renal artery. What is the expected change in blood flow through the stenotic artery?
Decrease to 1⁄16
2. When a person moves from a supine p...
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BRS CARDIOVASCULAR PHYSIOLOGY EXAM QUESTIONS
AND VERIFIED ANSWERS
1. A 53-year-old woman is found, by arteriography, to have 50% narrowing of her
left renal artery. What is the expected change in blood flow through the stenotic
artery?
Decrease to 1⁄16
2. When a person moves from a supine position to a standing position, which of
the following compensatory changes occurs?
Increased contractility
3. At which site is systolic blood pressure (blood pressure) the highest?
Renal artery
4. A person's electrocardiogram (ECG) has no P wave, but has a normal QRS
complex and a normal T wave. Therefore, his pacemaker is located in the
atrioventricular (AV) node
5. If the ejection fraction increases, there will be a decrease in
end-systolic volume
6. (An electrocardiogram (ECG) on a person shows ventricular extrasystoles) The
extrasystolic beat would produce
decreased pulse pressure because stroke volume is decreased
7. (An electrocardiogram (ECG) on a person shows ventricular extrasystoles)
After an extrasystole, the next "normal" ventricular contraction produces
, increased pulse pressure because the contractility of the ventricle is
increased
8. An increase in contractility is demonstrated on a Frank-Starling diagram by
increased cardiac output for a given end-diastolic volume
9. On the graph, p.111, showing left ventricular volume and pressure,
isovolumetric contraction occurs from point
1→2
10. The aortic valve closes at point
3
11. The first heart sound corresponds to point
1
12. If the heart rate is 70 beats/min, then the cardiac output of this ventricle is
closest to
5.25 L/min
13. (In a capillary, Pc is 30 mm Hg, Pi is -2 mm Hg, πc is 25 mm Hg, and πi is 2
mm Hg) What is the direction of fluid movement and the net driving force?
Filtration; 9 mm Hg
14. (In a capillary, Pc is 30 mm Hg, Pi is -2 mm Hg, πc is 25 mm Hg, and πi is 2
mm Hg) If Kf is 0.5 mL/min/mm Hg, what is the rate of water flow across the
capillary wall?
4.50 mL/min
15. The tendency for blood flow to be turbu- lent is increased by
partial occlusion of a blood vessel
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