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The Cardiac Cycle Quiz
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The Cardiac Cycle Quiz

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@GoodlyBlack

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Questions and Answers

Which of the following best describes the duration of one cardiac cycle when the heart beats 75 times per minute?

  • 1.5 seconds
  • 3.0 seconds
  • 0.8 seconds (correct)
  • 2.2 seconds

    • What are the two main periods of the cardiac cycle?

  • Atrial systole and ventricular systole
  • Atrial diastole and ventricular diastole
  • Atrial systole and atrial diastole
  • Ventricular systole and ventricular diastole (correct)

    • What regulates the timing and duration of the ventricular systole and ventricular diastole?

  • Heart chambers
  • Heart valves
  • Pacemaker cells (correct)
  • Major vessels

    • Approximately what proportion of the cardiac cycle does ventricular systole make up?

    <p>1/3</p> Signup and view all the answers

    How does the duration of the cardiac cycle change with increasing heart rate?

    <p>It shortens</p> Signup and view all the answers

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