The function of the cilia of the lower part of the respiratory system is to push contaminated mucus up to the pharynx.

Question

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The cilia in the lower part of the respiratory system, such as the bronchi and bronchioles, help to push contaminated mucus and particles trapped in mucus up to the pharynx where they can be coughed up or swallowed. This process helps to protect the lungs from infection and damage.

The Function of the Cilia of the Lower Part of the Respiratory