Which of the following describes the function of cilia?
A) Mucus-secreting cells in the lower bronchial tree
B) Tiny structures in the airways that trap and hold foreign material
C) Tiny hair-like structures in the airways that push mucus toward the pharynx
D) Composed of macrophages and destroy inhaled pathogens
E) Flap-like structures that close off the larynx during swallowing

Question

Quizplus · Accepted Answer

Cilia are tiny, hair-like structures found in the airways (among other places in the body) that move in a coordinated way to push mucus, which traps foreign particles and pathogens, toward the pharynx where it can be swallowed or expelled. This is a key part of the body's defense mechanism against inhaled pathogens and irritants.

Which of the Following Describes the Function of Cilia