what is the right atrium description
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Answer:The right atrium is the first chamber of the heart to receive deoxygenated and carbon dioxide-rich systemic blood from the body, and the left atrium is the first chamber to receive the oxygenated blood returning from the lungs.
Explanation:
Answer:
The right atrium is the right upper chamber of the heart. It receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle which then sends it to the lungs to be oxygenated.