The Cilia-Propelled Mucus Elevator Keeps Foreign Material Out of the _______

Question

The cilia-propelled mucus elevator keeps foreign material out of the _______.
A) stomach
B) lungs
C) nasal septum
D) vocal cords

Accepted Answer

The cilia-propelled mucus elevator helps to move mucus up and out of the lungs, keeping foreign material out of the lungs.