The following diagram shows the internal structure of the heart.
A and C represents two heart chambers.
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State one difference in the function of A and C.
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State the main difference between the blood found in the chambers on the left and right side of the heart.
Structure B plays an important role in the flow of blood through the heart.
Label structure B.
[1]
State the role of structure B in the flow of blood through the heart.
[1]
Structure D is a wall of muscular tissue.
Describe the purpose of structure D in the heart.
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