What Causes The Lub Dub Sound Of The Heartbeat – No Ads

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The "dub" is the sound of these exit valves closing. It is typically shorter and sharper than the "lub" because the closing motion happens very quickly due to the high pressure in the arteries. what causes the lub dub sound of the heartbeat

The second sound, the "dub," is known as . It is shorter, sharper, and slightly higher in pitch. What causes it? Lub-dub