Question

An atrioventricular value prevents the backflow or leakage blood from

• A. the right ventricle into the right atrium
• B. the left atrium into the left ventricle
• C. the aorta into the left ventricle
• D. the pulmonary vein into the right atrium

Answer 1

The correct option is A the right ventricle into the right atrium

There are two atrioventricular valves, Mitral (Bicuspid valve) and Tricuspid valve.These valves maintain the flow of blood from atrium to ventricle and do not allow the backflow of blood from ventricles to atrium. The opening between the right atrium and the left ventricle is surrounded by valve to form 3 muscular cusps called the tricuspid valve. Whereas the opening between left atrium and left ventricle is surrounded by a valve called the bicuspid valve.