Zoology-Cardiac Cycle
NEET Zoology Cardiac Cycle MCQ Question
Type: MCQ-fact-Hard-Class 11
What happens to the semilunar valves during ventricular diastole?
A
They close to prevent backflow of blood.
B
They remain open to allow blood flow into the ventricles.
C
They open due to increased atrial pressure.
D
They contract to push blood into the aorta.
Correct Answer
Option A
Detailed Explanation
During ventricular diastole, the ventricular pressure falls, causing the closure of the semilunar valves to prevent backflow of blood into the ventricles.
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