Advanced Arytenoid Cartilages Quiz

Q1. Why can fixation of a cricoarytenoid joint mimic a recurrent laryngeal nerve palsy?

• Both paralyze the cricothyroid muscle only
• Both can produce an immobile or poorly mobile vocal fold
• Both selectively abolish supraglottic sensation
• Both destroy the vocal ligament

Q2. Why is the muscular process an effective lever for changing vocal fold position?

• Muscle force on the muscular process rotates the arytenoid and repositions the vocal process
• It directly shortens the vocal ligament without arytenoid movement
• It is fused to the thyroid cartilage
• It contains a separate synovial joint with the epiglottis

Q3. Which arytenoid movement is most directly responsible for widening the rima glottidis during inspiration?

• Medial rotation that approximates the vocal processes
• Lateral rotation that moves the vocal processes apart
• Anterior displacement that closes the inlet
• Superior movement of the arytenoid apices only

Q4. Which movement contributes to closure of the posterior intercartilaginous part of the rima glottidis?

• Maximal lateral rotation of both arytenoids
• Approximation of the arytenoid cartilages
• Separation of the arytenoid bases
• Elevation of the thyroid cartilage alone

Q5. What is the functional significance of the corniculate cartilage relationship to the arytenoid?

• It forms the vocal process
• It replaces the cricoarytenoid joint
• It caps the arytenoid apex and supports the posterior aryepiglottic fold
• It articulates directly with the thyroid cartilage to tense the vocal fold

Q6. Which clinical event can mechanically displace an arytenoid cartilage and impair vocal fold movement?

• Traumatic endotracheal intubation
• Lumbar puncture
• Routine pupillary examination
• Dental scaling

Q7. How can arytenoid dislocation be anatomically distinguished in principle from denervation of intrinsic laryngeal muscles?

• Denervation always fractures the arytenoid cartilage
• They are anatomically identical processes
• Dislocation affects only laryngeal sensation, while denervation affects cartilage shape
• Dislocation is mechanical joint dysfunction, whereas denervation is loss of neural motor drive

Q8. Why are the arytenoid cartilages central to both respiration and phonation?

• They function only as passive supports with no joint movement
• They control only swallowing and have no respiratory role
• Their movements permit both vocal fold abduction for breathing and adduction for phonation
• They regulate airflow by moving the hyoid bone rather than the vocal folds

Q9. Which structural relationship directly transmits arytenoid movement to the true vocal fold?

• Fusion of the arytenoid apex with the thyroid cartilage
• Attachment of the epiglottis to the cricoarytenoid joint
• Attachment of the vestibular ligament to the muscular process
• Attachment of the vocal ligament to the vocal process

Q10. Which statement best integrates arytenoid cartilage anatomy?

• Arytenoids are fixed unpaired cartilages that form the anterior laryngeal wall
• Paired arytenoids use vocal and muscular processes plus cricoarytenoid joint movement to control the vocal folds and glottic aperture
• Arytenoids attach only to the epiglottis and do not influence the vocal folds
• Arytenoids are sensory ganglia that regulate phonation