Question

10. The upper two chambers of the heart are
and the lower ones are
​

Answer 1

Upper chambers of the heart are called ATRIUM
the lower chambers of the heart are called VENTRICLES




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Answer 2

Answer:

A normal heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of your heart.