During ventricular diastole, which event normally occurs?
Correct answer: A. The ventricles relax and fill with blood
- A. The ventricles relax and fill with blood
- B. The semilunar valves open and blood leaves
- C. The atria contract and eject into arteries
- D. The ventricles contract and raise arterial pressure
Explanation
During ventricular diastole, the ventricles relax and fill from the atria. Ventricular ejection occurs during systole, when the semilunar valves are open.
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About Cardiovascular System
The cardiovascular system covers the chambers, valves and major vessels of the heart, the cardiac cycle, conduction pathway, blood pressure and the circulation through pulmonary and systemic circuits. It also explains artery, vein and capillary structure, exchange at capillary beds, and how the cardiac cycle differs from general blood flow.
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