Biology for IGCSE & O level - Transport In Animals (Section 4 - No. 4)
What is the role of the atrioventricular valves?
Preventing blood flow from atria to ventricles
Preventing blood flow from ventricles to atria
Controlling blood pressure
Facilitating gas exchange
Explanation
The atrioventricular valves (tricuspid and bicuspid) prevent blood from flowing back into the atria when the ventricles contract.
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