What are the two upper chambers of the heart called?

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Multiple Choice

What are the two upper chambers of the heart called?

Explanation:
The upper chambers of the heart are called atria. The heart has four chambers: two atria on top and two ventricles below. The atria receive blood: the right atrium collects deoxygenated blood from the body, and the left atrium collects oxygenated blood from the lungs. Blood then moves from the atria into the ventricles through the heart’s valves, and the ventricles pump blood out to the lungs or the rest of the body. The aorta is the main artery leaving the heart, not a chamber, and valves are structures that regulate flow, not chambers. Ventricles are the lower chambers.

The upper chambers of the heart are called atria. The heart has four chambers: two atria on top and two ventricles below. The atria receive blood: the right atrium collects deoxygenated blood from the body, and the left atrium collects oxygenated blood from the lungs. Blood then moves from the atria into the ventricles through the heart’s valves, and the ventricles pump blood out to the lungs or the rest of the body. The aorta is the main artery leaving the heart, not a chamber, and valves are structures that regulate flow, not chambers. Ventricles are the lower chambers.

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