Multiple choice

The intrinsic laryngeal muscles are responsible for maintaining sound production in humans. The movement of which of the following muscles causes abducted vocal folds?

  1. Posterior cricoarytenoid

  2. Lateral cricoarytenoid

  3. Transverse arytenoid

  4. Oblique arytenoid

  5. Cricothyroid
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A Correct answer
Explanation

Posterior cricoarytenoid is the ligament that passes downward from the posterior border of the arytenoid cartilage to the lamina of the cricoid cartilage. Posterior cricoarytenoid muscles abduct and externally rotate the arytenoid cartilages resulting in abducted vocal folds.

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