The Beating of the Cilia of the Respiratory Passages in the Direction

Question

The beating of the cilia of the respiratory passages in the direction of the pharynx forms the
A)respiratory mucosa.
B)lamina propria.
C)respiratory defense system.
D)mucus escalator.
E)conducting portion of the respiratory tract.

Accepted Answer

The beating of the cilia in the direction of the pharynx creates a mucus escalator that helps to move mucus and any trapped debris up and out of the respiratory tract.