Larynx Anatomy – 20 Hard MCQs

Includes 10 case-based questions

1. Which cartilage forms the posterior boundary of the laryngeal inlet?

Epiglottis Thyroid cartilage Arytenoid cartilages Cricoid cartilage

2. The only complete cartilaginous ring of the airway is:

Thyroid cartilage Cricoid cartilage Epiglottis Arytenoid cartilage

3. Which intrinsic laryngeal muscle is supplied by the external laryngeal nerve?

Thyroarytenoid Posterior cricoarytenoid Cricothyroid Lateral cricoarytenoid

4. Which joint allows tension adjustment of vocal cords?

Cricoarytenoid Arytenothyroid Cricothyroid Thyrohyoid

5. True vocal cords are white in color because they are:

Keratinized Rich in lymphatics Avascular Cartilaginous

6. The conus elasticus forms which structure?

Vestibular folds Vocal ligaments Aryepiglottic folds Pharyngeal wall

7. Which muscle is the sole abductor of vocal cords?

Lateral cricoarytenoid Thyroarytenoid Posterior cricoarytenoid Cricothyroid

8. Sensory supply above the vocal cords is via:

Recurrent laryngeal nerve External laryngeal nerve Internal laryngeal nerve Glossopharyngeal nerve

9. Lymphatic drainage of the vocal cords is:

Rich to upper deep cervical nodes Rich to lower deep cervical nodes Absent or very poor To prelaryngeal nodes

10. Larynx develops primarily from which pharyngeal arches?

1st & 2nd 2nd & 3rd 3rd & 4th 4th & 6th

11. A patient has hoarseness with inability to raise pitch. Injured nerve?

Recurrent laryngeal nerve Internal laryngeal nerve External laryngeal nerve Glossopharyngeal nerve

12. After thyroid surgery, patient presents with stridor. Likely muscle paralyzed?

Cricothyroid Posterior cricoarytenoid Thyroarytenoid Vocalis

13. Emergency cricothyrotomy is performed through:

Thyrohyoid membrane Cricotracheal membrane Cricothyroid membrane Quadrangular membrane

14. A singer develops loss of fine voice modulation. Which muscle affected?

Posterior cricoarytenoid Thyroarytenoid Vocalis Cricothyroid

15. A tumor confined to vocal cords spreads late due to:

Poor arterial supply Poor venous drainage Poor lymphatic drainage Thick mucosa

16. Damage to which joint prevents abduction of vocal cords?

Cricothyroid Cricoarytenoid Thyrohyoid Arytenoepiglottic

17. Loss of cough reflex above vocal cords indicates injury to:

Recurrent laryngeal nerve External laryngeal nerve Internal laryngeal nerve Hypoglossal nerve

18. Bilateral recurrent laryngeal nerve injury most likely causes:

Aphonia Stridor and airway obstruction Loss of cough reflex Loss of taste

19. Injury to which cartilage affects attachment of vocal ligaments?

Epiglottis Arytenoid Thyroid Cricoid

20. During swallowing, which structure primarily prevents aspiration?

Vocal cords Vestibular folds Epiglottis Arytenoids

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