Advanced Laryngopharynx Quiz

Q1. Why can an internal laryngeal nerve injury increase aspiration risk?

• The injury paralyzes all muscles of mastication
• It prevents the esophagus from forming
• It eliminates sensation from the maxillary teeth
• Reduced supraglottic sensation impairs detection of material near the airway

Q2. Why can a fish bone lodged in the piriform recess cause altered sensation above the vocal folds?

• The recurrent laryngeal nerve supplies all mucosa above the vocal folds
• The facial nerve crosses the recess to supply the epiglottis
• The internal laryngeal nerve lies deep to the recess mucosa and supplies the supraglottic larynx
• The hypoglossal nerve lies within the recess and supplies the vocal folds

Q3. Why does the piriform recess help route food around rather than through the laryngeal inlet?

• It opens directly into the trachea
• Its lateral position provides a channel around the laryngeal inlet
• It is located inside the esophageal lumen
• It closes the nasopharynx

Q4. Why is coordinated relaxation of the cricopharyngeus necessary during swallowing?

• It must relax to open the upper esophageal sphincter for bolus passage
• It elevates the mandible to create negative pressure
• It closes the choanae by pulling the nasal septum
• It must contract to open the laryngeal inlet

Q5. Which weak region is associated with posterior pharyngoesophageal diverticulum formation?

• Carotid triangle
• Killian dehiscence
• Pterygopalatine fossa
• Submandibular triangle

Q6. Why can a Zenker diverticulum retain swallowed material?

• The pharyngoesophageal pouch can trap material outside the main lumen
• It replaces the epiglottis
• It permanently closes the oral cavity
• The diverticulum opens into the nasal cavity

Q7. Why can a lesion involving the lateral laryngopharyngeal wall threaten both swallowing and airway protection?

• The laryngopharynx has no neural supply
• The lateral wall controls only tongue protrusion
• The region contains only salivary glands
• Bolus pathways and airway sensory structures are closely related in this region

Q8. Why can deep laryngopharyngeal infection potentially spread beyond the mucosa?

• The mucosa opens directly into the cranial cavity
• The thyroid cartilage contains a direct tunnel to the brain
• All infection drains through the incisive canal
• Deep cervical fascial planes provide potential routes for extension

Q9. Why is the C6 level an important landmark in laryngopharyngeal anatomy?

• It marks the approximate pharyngoesophageal transition at the lower border of the cricoid cartilage
• It marks the opening of the auditory tube
• It is the level where the nasal cavity becomes the nasopharynx
• It marks the mandibular foramen

Q10. Which statement best integrates laryngopharyngeal anatomy?

• It is an inferior pharyngeal passage that routes the bolus around the laryngeal inlet toward the esophagus and is closely related to airway sensory nerves
• It is a salivary gland located inside the thyroid cartilage
• It is the superior pharyngeal region containing the pharyngotympanic tube opening
• It is a rigid bony canal connecting the nasal cavity to the trachea