Question

what do you mean by lub tub sound of heart?
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Answer 1

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.

You may notice that the beating of your heart makes a “lubb-dubb, lubb-dubb” sound. This sound corresponds to the opening and closing of the valves in your heart. The first “lubb” sound is softer than the second; this is the sound of the mitral and tricuspid valves closing after the ventricles have filled with blood.

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Answer 2

Answer:

When a healthy heart pumps blood, it makes a “lub-dub” sound. The “lub” sound is the firstheart sound (S1) and is caused by the closing of the mitral valve and tricuspid valve. The “dub” sound is the second heart sound(S2) and is caused by the closing of the aortic valve and pulmonary valve.

Explanation:

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