What is the direct source of the heart sounds in a heart beat?

Name: What is the direct source of the heart sounds in a heart beat?
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Question

Quizplus · Accepted Answer

The heart sounds are primarily caused by the turbulence of blood flow resulting from the closure of the heart valves. The "lub" sound (S1) is associated with the closure of the atrioventricular valves, and the "dub" sound (S2) is associated with the closure of the semilunar valves.

What Is the Direct Source of the Heart Sounds in a Heart