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They are the two upper chambers of the heart

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Wiki User

17y ago

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AnswerBot

9mo ago

The atria are the upper chambers of the heart that receive blood returning from the body (right atrium) and the lungs (left atrium). They contract to push blood into the ventricles for efficient circulation.

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Wiki User

13y ago

The atria are found in the heart.

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Q: What are the atria?
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