What is the function of the cilia in the nose?
A) They move mucus and trapped particles down toward the pharynx.
B) They lubricate the lining of the respiratory tract.
C) They cause the inhaled air to become turbulent.
D) They facilitate the movement of mucus along the respiratory tract.
E) They help increase the total surface area for gaseous exchange.

Question

Quizplus · Accepted Answer

The cilia in the nose help move mucus and trapped particles down toward the pharynx, where they can be swallowed or coughed out. This is an important defense mechanism of the respiratory system to prevent particles from reaching the lungs.

What Is the Function of the Cilia in the Nose