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Q.

The second heart sound is associated with the

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a

closure of semilunar valves

b

opening of tricuspid and bicuspid valves

c

opening of semilunar valves

d

closure of tricuspid and bicuspid valves

answer is A.

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Detailed Solution

The second heart sound (dub) is associated with the closure of semilunar valves at the beginning of joint diastole.

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