Q11 of 42 Page 101

The second heart sound (dubb) is associated with the closure of

The second heart sound (dubb) is associated with the closure of


Semilunar valves. Sound is produced when the Ventricular Diastole begins, ventricles relax and the semilunar valves close making a ‘dub’ sound marking the end of ventricular systole. It is a very short and sharp sound.

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