Question

3) During contraction, which valve prevents the backward flow of blood from the ventricles?
(a) Sinoatrial valve
(b) Semilunar valve
(c) Atrioventricular valve
(d) Ventricular valve
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Answer 1

Answer:

b) Atrioventricular Valve

Explanation:

Atrioventricular valve ( tricuspid valve) - situated between the right atrium and right ventricular. Its main function is to maintain the flow of blood in forward direction.