Asked by Ashley Stoneman on Jun 19, 2024

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Which statement correctly identifies the phase of the cardiac cycle that occurs when the pressure in the ventricles is lower than the pressure in the great arteries but greater than the pressure in the atria?

A) Passive ventricular filling
B) Period of ejection
C) Period of isovolumetric contraction
D) Active ventricular filling

Cardiac Cycle

The sequence of events in the heart from the beginning of one heartbeat to the beginning of the next, including systole (contraction) and diastole (relaxation).

Ventricles

Lower chambers of the heart that receive blood from the atria and pump it to the lungs and the rest of the body.

Great Arteries

Major arteries that carry blood away from the heart to various parts of the body, notably the aorta and the pulmonary arteries.

  • Comprehend the stages and control of the cardiac cycle.
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MK
michael kalinowskiJun 20, 2024
Final Answer :
C
Explanation :
During the period of isovolumetric contraction, the pressure in the ventricles increases as they contract, but it is not yet high enough to open the semilunar valves and eject blood into the great arteries. This phase occurs after the atria have finished filling the ventricles and the atrioventricular valves have closed, but before the ventricular pressure exceeds the pressure in the great arteries, allowing for ejection.