The cilia found in the lower part of the respiratory system push contaminated mucus up to the pharynx.

Question

Quizplus · Accepted Answer

This is true. The cilia in the lower respiratory system, along with mucus-producing cells, form the mucociliary escalator which helps to clear debris and contaminants from the lungs. The cilia beat in a coordinated fashion to push the mucus containing the contaminants up toward the throat where it can be either coughed up or swallowed.

The Cilia Found in the Lower Part of the Respiratory