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16-10-2018
Chemistry

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As the heart contracts, oxygenated blood is pumped from the left atrium to the left ventricle through which valve?

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16-10-2018

It closes as the left ventricle contracts, preventing blood from returning to the left atrium; thereby, forcing it to exit through the aortic valve into the aorta. The left atrium receives oxygenated blood from the lungs through the pulmonary vein.

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