★ Muscle Anatomy Quiz
What two chemicals are necessary for muscle contraction to occur?
A. Niacin and Potassium
B. Calcium and ATP
C. Sodium and Potassium
D. Acetylcholine and Potassium
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What is the name of the thick myofilaments?
A. Actin
B. Myosin
C. Myoglobin
D. Titan
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