The contractile element in a skeletal muscle is present in______________?
Correct answer: C. Myofibril
- A. Sarcolemma
- B. Sarcoplasm
- C. Myofibril
- D. Endomysium
Explanation
Myofibrils are the contractile structures within a skeletal-muscle fibre and contain repeating sarcomeres made of actin and myosin. The sarcolemma is the cell membrane, while endomysium is connective tissue surrounding the fibre.
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