How do oropharyngeal and nasopharyngeal airways help to restore airway patency?
a. Isolating or protecting the lower airway from aspiration
b. Displacing the soft palate and uvula pos-teriorly
c. Lifting and displacing the epiglottis ante-riorly
d. Separating the tongue from the posterior pharyngeal wall
ANS: D
Pharyngeal airways restore airway patency by separating the tongue from the posterior pharynge-al wall.
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