Question
What event happens when the pressure inside the ventricles rises higher than that
of the pressure in the pulmonary trunk or aorta?
atrial systole
ejection
isovolumetric ventricular relaxation
atrial kick
of the pressure in the pulmonary trunk or aorta?
atrial systole
ejection
isovolumetric ventricular relaxation
atrial kick
Ask by Powers Spencer. in the United States
Mar 27,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
Ejection occurs when the pressure in the ventricles is higher than that in the pulmonary trunk or aorta, causing blood to be pushed out.
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Bonus Knowledge
When the pressure inside the ventricles rises higher than that in the pulmonary trunk or aorta, it’s the moment of ejection. This is when the heart pushes the blood out of the ventricles and into the circulation, either to the lungs via the pulmonary trunk or to the rest of the body via the aorta, contributing to the vital flow of oxygenated blood throughout the body.
During this ejection phase, the ventricles contract forcefully, and valves (specifically the semilunar valves) open to allow blood to exit. It’s a critical point in the cardiac cycle, ensuring that oxygen-rich blood is delivered to the tissues, while deoxygenated blood is sent to the lungs for re-oxygenation—like a well-choreographed dance!
