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Cardiac Cycle Overview
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Cardiac Cycle Overview

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Questions and Answers

What event occurs during atrial systole?

  • Ventricular relaxation
  • Atrial depolarisation (correct)
  • Ventricular repolarisation
  • Ventricular contraction

    • What is the function of the QRS complex in the cardiac cycle?

  • Atrial depolarisation
  • Ventricular repolarisation
  • Ventricular contraction (correct)
  • Atrial relaxation

    • During which phase do all heart valves remain closed while ventricular pressure increases significantly?

  • Isovolumetric relaxation
  • Ventricular diastole
  • Atrial systole
  • Isovolumetric contraction (correct)

    • What happens when semilunar valves open in the cardiac cycle?

    <p>Blood is ejected into the aorta</p> Signup and view all the answers

    What event marks the beginning of ventricular diastole?

    <p>T wave represents ventricular repolarisation</p> Signup and view all the answers

    When does isovolumetric relaxation occur in the cardiac cycle?

    <p>While ventricular pressure decreases</p> Signup and view all the answers

    What triggers the opening of atrioventricular valves during the cardiac cycle?

    <p>Decrease in atrial pressure</p> Signup and view all the answers

    What causes an increase in ventricular volume during the cardiac cycle?

    <p>Ventricular contraction.</p> Signup and view all the answers

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