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The second heart sound is associated wit...

The second heart sound is associated with the closure of

A

Tricuspid valve

B

Semilunar valves

C

Bicuspid valve

D

Tricuspid and bicuspid valves.

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Heart Sounds**: The heart produces sounds due to the closure of its valves. There are two primary heart sounds: S1 and S2. 2. **Identifying the First Heart Sound (S1)**: The first heart sound (S1) is referred to as the "lub" sound. This sound is produced by the closure of the atrioventricular (AV) valves, which include the tricuspid valve and the bicuspid (mitral) valve. 3. **Identifying the Second Heart Sound (S2)**: The second heart sound (S2) is known as the "dub" sound. This sound occurs due to the closure of the semilunar valves. 4. **Conclusion**: Therefore, the second heart sound (S2) is associated with the closure of the semilunar valves. **Final Answer**: The second heart sound is associated with the closure of the semilunar valves. ---
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The second heart sound (dub) is associated with the closure of

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Read the following statements : A. The action potential generated by the SA node stimulates both ventricles to undergo simultaneous contraction. B. The heart sound Lubb is associated with the closure of both semilunar valves. C. The QRS complex in ECG represents the depolarization of the ventricles. Select the appropriate option from the following :

The first heart sound is associated with :-