The respiratory airways filter, warm, and humidify incoming air.

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The respiratory airways, including the nose, nasal cavity, trachea, bronchi, and bronchioles, all have specialized structures that filter, warm, and humidify the air we breathe in. For example, the nasal cavity contains hair-like structures called cilia that trap larger particles such as dust, while the mucus lining in the airways traps smaller particles and microorganisms. The warm and humid environment of the respiratory system also helps to keep the delicate tissues inside healthy and functioning properly.

The Respiratory Airways Filter, Warm, and Humidify Incoming Air