Which bronchial structure(s) is(are) most susceptible to aspiration of foreign bodies?
a. Left mainstem bronchus
b. Terminal bronchioles
c. Right mainstem bronchus
d. Respiratory bronchioles
C
The right mainstem bronchus has a more downward slope and is less angled than the left bron-chus. Therefore, it is more likely to be a site of aspiration and a site for endotracheal tubes that are advanced too far.
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