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Questions and Answers
What is the main function of systole in the cardiac cycle?
What is the main function of systole in the cardiac cycle?
- Relaxing the chambers
- Pumping blood into circulation (correct)
- Closing the semilunar valves
- Filling the chambers with blood
What happens during atrial systole?
What happens during atrial systole?
- Semilunar valves open
- Atria relax
- Ventricles contract, pushing blood into the atria
- Atria contract, pushing blood into the ventricles (correct)
What is the end diastolic volume (EDV) in the cardiac cycle?
What is the end diastolic volume (EDV) in the cardiac cycle?
- Total volume of blood in the heart at the end of relaxation (correct)
- Volume of blood in the atria during contraction
- Amount of blood left in ventricles after stroke volume is pushed out
- Amount of blood pushed out by ventricles
What characterizes ventricular diastole in the cardiac cycle?
What characterizes ventricular diastole in the cardiac cycle?
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Which phase leads to the opening of the semilunar valves in the cardiac cycle?
Which phase leads to the opening of the semilunar valves in the cardiac cycle?
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What does stroke volume refer to in the cardiac cycle?
What does stroke volume refer to in the cardiac cycle?
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