NEET Zoology Cardiac Cycle Assertion Reason Question
Assertion (A): During ventricular diastole, the semilunar valves close to prevent the backflow of blood into the ventricles.
Reason (R): The ventricular pressure is higher than atrial pressure during ventricular diastole.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false.
Correct Answer
Detailed Explanation
During ventricular diastole, the ventricular pressure falls, causing the closure of semilunar valves to prevent backflow. However, the ventricular pressure is not higher than atrial pressure during this phase.
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