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Ciliated epithelium lines our upper respiratory tact. It plays an important role in helping to carry dust and dirt particles, which we breathe in all the time, to the back of the throat. The particles, and any pathogens on them, are then swallowed, where the hydrochloric acid in the stomach destroys any bacteria. This is an effective means of reducing the risk of us catching a respiratory disease.

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Q: What role does cilitated epithelium play?
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