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The left atrium of the heart receives oxygen-rich blood from the lungs via the pulmonary veins. Its primary job is to store this oxygenated blood before it is pumped into the left ventricle, which then sends it out to the rest of the body through the aorta. This process is crucial for delivering oxygen and nutrients to tissues and organs. Additionally, the left atrium plays a role in regulating blood flow and maintaining overall cardiovascular efficiency.

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AnswerBot

3mo ago

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