The function of the "ciliary escalator" is to
A) remove microorganisms from the gastrointestinal tract.
B) propel inhaled dust and microorganisms toward the throat.
C) remove microorganisms from the upper respiratory tract.
D) remove microorganisms from the lower respiratory tract.
E) trap inhaled dust and microorganisms in mucous and propel it away from the lower respiratory tract.

Question

Quizplus · Accepted Answer

The ciliary escalator is a system of mucus-producing cells and cilia that line the respiratory tract. The cilia beat in a coordinated manner, propelling mucus and trapped particles up the respiratory tract toward the throat, where it can be swallowed or coughed out.

The Function of the "Ciliary Escalator" Is to