The Function of the "Ciliary Escalator" Is to

Multiple Choice

The function of the "ciliary escalator" is to

A) propel inhaled dust and microorganisms away from the mouth,toward the lower respiratory tract.
B) remove microorganisms from the gastrointestinal tract.
C) remove microorganisms from the lower respiratory tract.
D) trap microorganisms in mucus in the upper respiratory tract.
E) trap inhaled dust and microorganisms in mucus and propel it away from the lower respiratory tract.