In the respiratory tract, ciliated cells constantly sweep mucus that contains trapped foreign matter.

Name: In the respiratory tract, ciliated cells constantly sweep mucus that contains trapped foreign matter.
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Ciliated cells in the respiratory tract have hair-like structures (cilia) that beat in a coordinated manner to move mucus, which traps dust, microbes, and other foreign particles, upwards towards the throat where it can be swallowed or expelled.

In the Respiratory Tract, Ciliated Cells Constantly Sweep Mucus That