complete the passage to describe the function of the heart. the pumping of the heart involves the alternate…
complete the passage to describe the function of the heart. 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 .
Answer
Brief Explanations:
The upper chambers of the heart are atria which receive blood, and the lower chambers are ventricles which pump blood out. This is basic knowledge in human - heart anatomy.
Answer:
The upper chambers of the heart are called atria, and the lower chambers of the heart are called ventricles.