| 11. | This short-lasting portion of the cardiac cycle takes place whilst all heart valves are closed.
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| 12. | Throughout the cardiac cycle, blood pressure increases and decreases.
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| 13. | The first 2.5 seconds show a normal cardiac cycle.
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| 14. | The venous hum is heard throughout the cardiac cycle.
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| 15. | The article Cardiac cycle discusses the normal heartbeat.
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| 16. | The cardiac cycle refers to a complete heartbeat which includes systole and diastole and the intervening pause.
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| 17. | There is no external resistance to blood flow and blood flow is continuous throughout the cardiac cycle.
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| 18. | At the beginning of the cardiac cycle, in early diastole, both the atria and ventricles are relaxed.
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| 19. | The "'cardiac cycle "'refers to the sequence of mechanical and electrical events that repeats with every heartbeat.
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| 20. | In contrast to defibrillation, synchronized electrical cardioversion is an electrical shock delivered in synchrony to the cardiac cycle.
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