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kobusy [5.1K]
3 years ago
8

The upper and lower chambers of the heart are separated by

Health
1 answer:
Sergeeva-Olga [200]3 years ago
7 0
The upper chambers are called the left and right atria, and the lower chambers are called the left and right ventricles. A wall of muscle called the septum separates the left and right atria and the left and right ventricles.
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