- A Troponin
- B Actin
- C Myosin
- D Tropomyosin
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Answer:
C
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Myofibrils are cylindrical structures that make up the muscle fibers. They contain the contractile elements of the muscle, which are arranged in a repeating pattern of dark and light bands. These bands are called sarcomeres, and they give the myofibrils their characteristic striated appearance.
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