Which valve action results from an increase in pressure in the ventricles of the heart?
Correct answer: D. The opening of the semilunar valves
- A. The closing of all the heart valves
- B. The closing of semilunar valves
- C. The opening of the bicuspid valve
- D. The opening of the semilunar valves
- E. The opening of the tricuspid valve
Explanation
When the pressure of the ventricles increases, the bicuspid and tricuspid valves close and semilunar valves open.
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