what is the use of left atrium
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Answer:
Left atrium: The upper right chamber of the heart. The left atrium receives oxygenated blood from the lungs and pumps it down into the left ventricle which delivers it to the body.
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Explanation:
The left atrium collects blood from the pulmonary veins and ejects it into the left ventricle. The left atrial (LA) chamber changes its size during a cardiac cycle, being largest at ventricular systole and smallest at atrial systole.
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