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MediumZoologycardiac cycle
+4 / -1

Statement-I : During each cardiac cycle two prominent sounds are produced which can be easily heard through a spirometer.
Statement-II : The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second sound (dub) is associated with the closure of the semilunar valves.

A
Both Statement I and Statement II are correct.
B
Both Statement I and Statement II are incorrect.
C
Statement I is incorrect but Statement II is correct.
D
Statement I is correct but Statement II is incorrect.
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A symptom of acute chest pain appears when no enough oxygen is reaching the hear

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