distinguish between atrium and ventricles
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Answer:
The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.
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Explanation:
The two atria are thin-walled chambers that receive blood from the veins.
The two ventricles are thick-walled chambers that forcefully pump blood out of the heart
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