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4 January, 17:33

Increased pressure in the ventricles would close what valve (s) ? Increased pressure in the ventricles would close what valve (s) ? AV valves only semilunar valves only both semilunar and AV valves

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  1. 4 January, 17:54
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    Answer: Atrioventricular valves (AV) only

    Explanation:

    During the early phase of ventricular systole, when the pressure in the ventricles is increased, the atrioventricular valves (mitral/tricuspid) closes. When the pressure in the ventricles exceeds the pressure in the aorta/pulmonary trunk the aortic/pulmonary valves open and blood is pumped from the heart into the great arteries.
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