A 70-Year Old Man Comes to the Office Due to Persistent

A 70-year old man comes to the office due to persistent aspiration.  Two weeks ago, he had a stroke that impacted his speech, voice, and swallowing.  Modified barium swallow study reveals aspiration of liquids without nasal regurgitation.  Aspiration is ameliorated when the patient flexes his neck to put his chin to his chest during swallowing.  This maneuver is most likely augmenting which of the following airway-protective mechanisms?

A) Improvement of mastication
B) Elevation of the soft palate
C) Contraction of the base of tongue
D) Superior displacement of the larynx
E) Adduction of the vocal folds

Correct Answer:

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