Draw neat and labelled diagram of human heart and describe double circulation answer
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Draw neat and labelled diagram of human heart and describe double circulation answer
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From the right atrium, the blood travels down into the right ventricle through the tricuspid valve. Valves in the heart prevent blood from flowing backwards.
From the right ventricle, the blood is pumped upwards to the lungs through the pulmonary arteries, passing through the pulmonary valve.