Which chamber of the heart sends oxygenated blood to systemic circulation when it contracts?

Question

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When the left ventricle contracts, it sends oxygenated blood to the systemic circulation (i.e. to the rest of the body). The left atrium receives oxygenated blood from the lungs and then sends it to the left ventricle to be pumped out to the rest of the body. The right atrium receives deoxygenated blood from the body and sends it to the right ventricle, which pumps it to the lungs for oxygenation.

Which Chamber of the Heart Sends Oxygenated Blood to Systemic