Multiple choice

Which of the following statements does not characterise skeletal muscles in humans?

  1. It has the similar structure as that of cardiac muscle.

  2. Skeletal muscle cells contain myosin filaments.

  3. Skeletal muscle has a system of T-tubules.

  4. The myofibrils of skeletal muscle are enveloped by sarcoplasmic reticulum.
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B Correct answer
Explanation

Skeletal muscle cells do not contain myosin filaments. Smooth muscle cells have no repeating sarcomeres, but a loose array of actin and myosin filaments.

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