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Andrej [43]
3 years ago
9

Omplete the passage to describe the function of the heart.

Biology
1 answer:
Lady bird [3.3K]3 years ago
7 0

Answer:

The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called at atria and the lower chambers of the heart are called ventricles.

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