Answer in one or two sentences:
What are the heart sounds and why are they produced?
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Explanation:
Heart sounds are lub-dub
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Answer:
The “ lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,” dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole
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