Biology, asked by nadamadejoym, 18 days ago

Which defences help to prevent pathogens reaching the alveoli when breathing in

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Answered by ayushwankhade88

Answer:

mucus layer

The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs. Cilia beat more than 1,000 times a minute, moving the mucus that lines the trachea upwards about 0.5 to 1 centimeter per minute (0.197 to 0.4 inch per minute).

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