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lub dub"The first heart sound or "lub" results from closure of the tricuspid and mitral valves. It is a rather low-pitched and a relatively long sound which, as indicated in, repre [..]
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lub dubA phrase you say when you have a great success and your point is proven. Comparable to "Hooray" except it's more like "In your face!". Commonly used when th [..]
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