Question

Explain when and how the two sounds of heart are produced?​

Answer 1

Answer:

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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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Answer 2

Answer:

two sounds of heart are produced by contraction pf heart

i.e 1st lub sound by contraction of auricles

2nd dub sound by contraction of venticles