The second heart sound is caused by the closing of the _____ valve(s).

Name: The second heart sound is caused by the closing of the _____ valve(s).
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Question

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The second heart sound is caused by the closing of the semilunar valves, which include the aortic valve and the pulmonary valve. The mitral valve and tricuspid valve are involved in the first heart sound, which is caused by the closure of the AV valves.

The Second Heart Sound Is Caused by the Closing of the _____