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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

, and the lower chambers of the heart are called
.

2 Answers

3 votes
The upper chambers of the heart are called Syria and the lower are called ventricles.
User Nomadictype
by
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2 votes

Answer:

1. Atria 2. Ventricles

Step-by-step explanation:

I took the assignment and this is the correct answer.

User Abysslover
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