The Mucociliary Escalator Protects The

Question

The mucociliary escalator protects the
A)lungs.
B)small intestine.
C)urinary bladder.
D)eyes.
E)all of the above.

Accepted Answer

The mucociliary escalator is a mechanism present in the respiratory tract that protects the lungs from foreign particles and microorganisms. It involves the coordinated action of mucus-producing cells and cilia to move the mucus layer and trapped particles towards the throat, where they can be swallowed or coughed up. It is not involved in protecting the small intestine, urinary bladder, or eyes.