INBDE (Integrated National Board Dental Examination) Practice Exam

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Which muscles are responsible for closing the airway and adducting the vocal cords?

  1. Posterior cricoarytenoids

  2. Oblique/transverse arytenoids

  3. Cricothyroid

  4. Genioglossus

The correct answer is: Oblique/transverse arytenoids

The posterior cricoarytenoids are incorrect because they are responsible for opening the airway, not closing it. The oblique/transverse arytenoids are responsible for making speaking easier and adducting the vocal cords, making them the correct answer. The cricothyroid are responsible for lengthening and tensing the vocal cords, not adducting them. The genioglossus is responsible for moving the tongue, not closing the airway or adducting the vocal cords. Therefore, option B is the correct answer for this question.

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