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During which phase of the cardiac cycle is ventricular pressure greater than aortic pressure?
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18. The Heart
Cardiac Cycle
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During what phase of the cardiac cycle does blood flow from the ventricles into the pulmonary trunk and aorta?
A
Ventricular systole
B
Ventricular diastole
C
Isovolumetric relaxation
D
Atrial systole
Guida verificata passo dopo passo1
Understand the cardiac cycle phases: The cardiac cycle consists of several phases, including atrial systole, ventricular systole, and ventricular diastole.
Identify ventricular systole: During ventricular systole, the ventricles contract, increasing the pressure inside them.
Recognize the role of pressure: As the pressure in the ventricles exceeds the pressure in the pulmonary trunk and aorta, the semilunar valves open.
Determine blood flow direction: The opening of the semilunar valves allows blood to flow from the ventricles into the pulmonary trunk and aorta.
Conclude the phase: Therefore, the phase of the cardiac cycle when blood flows from the ventricles into the pulmonary trunk and aorta is ventricular systole.
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