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Category - NSCA

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Which of the following facts is not true about skeletal muscles?
  1. They account for 36-45% of total body weight.
  2. Skeletal muscle is the most plentiful tissue type in the body.
  3. They can be stretched to up to 250% of their resting length.
  4. They usually operate together with other muscles in functional groups.
Explanation
Answer: C - All these facts are true about skeletal muscles except for C. Skeletal muscles can only be stretched up to 150% of their resting length, not up to 250%. There are over 600 different skeletal muscles in the body and they work in pairs and groups to perform movement.
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