What is the function of the tricuspid valve? A. It acts as a pacemaker.
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B. To pump blood through the heart. C. Prevents backflow of blood to the left atrium. D. Prevents backflow of blood to the right atrium.
What is the fundamental unit of muscle contraction? A. Myofibril B. Sarcomere C. Myosin D. Sarcolemma
Which chamber of the heart is responsible
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