Debris trapped on the sticky mucus lining the respiratory airway is most often cleared away by the alveolar macrophages.

Question

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Debris trapped on the sticky mucus lining the respiratory airway is typically cleared away by the cilia of the respiratory epithelium, which move the mucus upward and outward, where it can be coughed up or swallowed. Alveolar macrophages mainly handle debris that makes it past the respiratory epithelium and into the lungs.

Debris Trapped on the Sticky Mucus Lining the Respiratory Airway