Cardiac Cycle — Cardiovascular Physiology

Cardiac Cycle MCQs: practice questions

Sample Cardiac Cycle multiple-choice questions from Cardiovascular Physiology.

1. The third heart sound is associated with:

   • A. AV valve closure
   • B. Rapid ventricular filling
   • C. Semilunar valve closure
   • D. Atrial depolarization
   • E. Isovolumetric contraction

2. A rapid increase in heart rate can decrease stroke volume because it:

   • A. Closes the mitral valve permanently
   • B. Increases end-diastolic volume
   • C. Reduces ventricular filling time and end-diastolic volume
   • D. Eliminates systole
   • E. Increases residual volume by stopping ejection

3. During isovolumetric ventricular contraction, ventricular volume:

   • A. Increases rapidly
   • B. Remains constant
   • C. Decreases rapidly
   • D. Equals residual volume
   • E. Equals zero

4. The first heart sound occurs at the beginning of:

   • A. Isovolumetric ventricular contraction
   • B. Rapid filling
   • C. Diastasis
   • D. Ventricular ejection
   • E. Isovolumetric relaxation

5. The a wave of the jugular venous pulse is caused by:

   • A. Atrial contraction
   • B. Ventricular contraction
   • C. AV valve closure
   • D. Ventricular ejection
   • E. Aortic valve closure

6. Stroke volume equals:

7. The fourth heart sound is associated with:

8. The second heart sound occurs at the beginning of:

9. The first heart sound is produced by closure of the:

10. The v wave of the venous pulse reflects:

11. End-diastolic volume is the ventricular volume:

12. Isovolumetric ventricular contraction begins when:

13. Diastasis refers to:

14. Atrial systole contributes to ventricular filling but is:

15. A normal ejection fraction is approximately:

16. The dicrotic notch on the aortic pressure tracing is caused by:

17. The second heart sound corresponds to closure of the:

18. Atrial systole is preceded by the:

19. During rapid ventricular ejection, ventricular volume:

20. An increase in heart rate shortens:

21. During ventricular diastole, the mitral valve is generally:

22. The aortic valve closes when:

23. During isovolumetric relaxation, ventricular volume:

24. The aortic valve opens when:

25. During ventricular ejection, the aortic valve is:

26. The mitral valve opens when:

27. End-systolic volume is the ventricular volume:

28. Ejection fraction equals:

29. Isovolumetric ventricular relaxation begins after:

30. Rapid ventricular filling occurs primarily during: