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Eduardwww [97]
3 years ago
15

Complete the passage to describe the function of the heart. The pumping of the heart involves the alternate contraction and rela

xation of the chambers of the heart. The upper chambers of the heart are called , and the lower chambers of the heart are called .
Biology
1 answer:
Andrei [34K]3 years ago
4 0

Answer:

upper chambers of heart are called auricles or atria

lower chambers are called ventricles

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