Question

Explain purification and distribution of blood by human heart

Answer 1

Answer:

Oxygen-poor blood is collected from body parts through superior and inferior vena cava into the right artery of the heart which is then pumped to lungs through the pulmonary artery.  Then the oxygen-rich blood from the lungs is transferred to the left atrium through the pulmonary vein which is then pumped to all other body parts through the aorta.

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Answer 2

Answer:

The heart acts as a pump. It is divided in to a right and left portion. The right portion receives blood (which is impure) from the body and pumps the same to the lungs for purification (oxygenation). ... The right atrium pumps this blood into the Right Ventricle or the right lower chamber through the Tricuspid Valve