Function of mucus and cilia in the respiratory system (help)

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ambertreharne
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As the title states really, I can't find anything that makes sense online about this. It is for my revision notes
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jsg9
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Mucus in the respiratory system is for trapping microbes that are potentially pathogenic/harmful or which can transmit communicable disease, and large particles entering your lungs and causing damage and/or irritation.

Cilia are for “wafting” the mucus out of the trachea and bronchi, and moving the mucus (and particles/microbes trapped by it) out of the respiratory system and into the throat, where it’s swallowed or expelled by the body.
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