Cardiac Cycle Phases: Atrial and Ventricular Contractions
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Questions and Answers

During which phase of the cardiac cycle do the atria contract following depolarization?

  • Ventricular diastole
  • Atrial systole (correct)
  • Atrial diastole
  • Ventricular systole

    • What is considered the end diastolic volume (EDV) or preload in the cardiac cycle?

  • Blood in the ventricles before they contract (correct)
  • End systolic volume (ESV)
  • Atrial systole
  • Stroke volume

    • What occurs during ventricular diastole in the cardiac cycle?

  • Atria contract
  • Semilunar valves open
  • Atrioventricular valves close
  • Ventricles relax (correct)

    • Which phase marks the relaxation phase of the ventricles in the cardiac cycle?

    <p>Ventricular diastole</p> Signup and view all the answers

    What leads to the opening of the semilunar valves during the cardiac cycle?

    <p>Increase in pressure in the ventricles</p> Signup and view all the answers

    How much blood is typically pushed out by the ventricles as stroke volume in the cardiac cycle?

    <p>$60 - 70$ mL</p> Signup and view all the answers

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