Question:medium

Consider the following statements:
Assertion (A): In cardiac cycle, whenever ventricles relax, the second sound dup is produced.
Reason (R): Closure of semilunar valves of pulmonary valve and aortic valve.
The correct answer is

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Heart Sounds:

{LUB (1st):} Closure of AV valves (Tricuspid/Bicuspid) $\rightarrow$ Start of Systole.
{DUB (2nd):} Closure of Semilunar valves $\rightarrow$ Start of Diastole.

Updated On: Mar 31, 2026

Both (A) and (R) are true, (R) is the correct explanation of (A)
Both (A) and (R) are true, (R) is not the correct explanation of (A)
(A) is true, but (R) is false
(A) is false, but (R) is true

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The Correct Option is A

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