What sound is made during ventricular diastole?

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Multiple Choice

What sound is made during ventricular diastole?

During ventricular diastole, the semilunar valves (aortic and pulmonary) close to prevent backflow into the ventricles. This closure produces the second heart sound, S2, commonly described as "dupp." S2 marks the end of systole and the start of diastole. For context, S1, the "lubb," comes from the closure of the AV valves at the beginning of systole; S3, the "kent," can occur with rapid early ventricular filling, and S4, the "tud," can occur with atrial contraction late in diastole. A normal S2 may be heard as a single sound or split with respiration.

During ventricular diastole, the semilunar valves (aortic and pulmonary) close to prevent backflow into the ventricles. This closure produces the second heart sound, S2, commonly described as "dupp." S2 marks the end of systole and the start of diastole. For context, S1, the "lubb," comes from the closure of the AV valves at the beginning of systole; S3, the "kent," can occur with rapid early ventricular filling, and S4, the "tud," can occur with atrial contraction late in diastole. A normal S2 may be heard as a single sound or split with respiration.

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