Given below are two statements.
Statement I : Decline in ventricular pressure during ventricular diastole causes the closure of semilunar valves.
Statement II : As the ventricular pressure declines further, the tricuspid and bicuspid valves are pushed open.
In the light of above statements, choose the correct answer from the option given below.

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Both statement I and statement II are true.

Statement I is true, and statement II is false.

Both statement I and statement II are false.

Statement I is false, and statement II is true.

answer is A.

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Detailed Solution

Statement I is true. Semilunar valves (such as the aortic and pulmonary valves) close when ventricular pressure falls below the pressure in the major arteries (aorta and pulmonary artery). This closure prevents blood from flowing back into the ventricles during diastole (relaxation phase of the heart).

Statement II is true. As the ventricular pressure declines further, the tricuspid and bicuspid valves are pushed open by the pressure in the atria exerted by the blood, which is being emptied into them by the veins.

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