The number of muscle fibers in a motor unit are least in______________?
Correct answer: D. Laryngeal muscles
- A. Extraocular muscles
- B. Pharyngeal muscles
- C. Muscles of middle ear
- D. Laryngeal muscles
Explanation
The smallest motor units are found where precise, fine control is required, especially in laryngeal muscles. They contain very few muscle fibres per motor neuron, fewer than typical pharyngeal or extraocular units.
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