The mucociliary escalator functions to:
a. trap and sweep pathogens into the urine
b. kill via lysozyme activity
c. harbor normal flora that discourage pathogens from colonizing
d. produce fatty acids with a low pH that kills microbes
e. trap and sweep microbes from the bronchi back up to the throat to be swallowed
Answer: e. trap and sweep microbes from the bronchi back up to the throat to be swallowed
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