Which of the following statement is incorrect about skeletal muscle fibres?
Correct answer: B. They are 1-1 nm in diameter and surrounded by sarcolemma
- A. They are multinucleated
- B. They are 1-1 nm in diameter and surrounded by sarcolemma
- C. They contain O2 storing molecules called myoglobin
- D. Their cytoplasm contains a high concentration of carbohydrates
Explanation
Skeletal muscle fibres are not 1-1 nm in diameter. They are 10-100 micrometers in diameter and are surrounded by sarcolemma.
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About Muscles
Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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