Biology for IGCSE & O level - Transport In Animals (Section 6 - No. 4)
What is the primary function of the atrioventricular (AV) valves?
To prevent backflow from the ventricles into the atria.
To regulate blood pressure in the ventricles.
To control the heart rate.
To allow blood to flow from the atria into the ventricles.
Explanation
AV valves allow blood flow from the atria to the ventricles.
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