Which of the Following Statements Is NOT Correct Regarding the Motor

question 26

Multiple Choice

Which of the following statements is NOT correct regarding the motor units and their activation?

• A) A motor unit in muscles of gross movement can have thousands of muscle cells.
• B) All muscle fibers in a single motor unit are of the same fiber type.
• C) A weak contractile stimulus activates fast-twitch motor units.
• D) The metabolic capacity of muscle fibers within a motor unit can be altered.
• E) At its peak intensity, a contractile stimulus will activate muscle fibers that are easily fatigued.

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