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20 October, 23:31

The upper chambers of the heart are called, and the lower chambers of the heart are called.

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  1. 21 October, 01:08
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    Answer: The upper chamber is called an atrium, or auricle, and the lower chamber is called a ventricle. The two atria act as receiving chambers for blood entering the heart; the more muscular ventricles pump the blood out of the heart.
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