Hyolaryngeal excursion during swallowing primarily serves to accomplish which of the following?

• A. Elevate the larynx and widen the pharynx
• B. Lower the larynx to protect the airway
• C. Provide velopharyngeal closure
• D. Stabilize the tongue base

Answer: (A)

Hyolaryngeal excursion is the upward and forward movement of the hyoid and larynx during swallowing. This lift serves two main purposes: it protects the airway by better closing the laryngeal inlet (aids epiglottic closure) and it helps open the upper esophageal sphincter by widening the pharyngeal space so the bolus can pass smoothly. Lowering the larynx would reduce airway protection, so that option isn’t the function. Velopharyngeal closure involves the soft palate and nasal cavity, not this laryngeal–hyoid movement, and stabilizing the tongue base is related to the oral phase rather than hyolaryngeal excursion. Therefore, elevating the larynx and widening the pharynx best captures the primary role.