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The mucociliary escalator is one of the major defense mechanisms, which protect the lung, and if the mucociliary escalator fails, it increases the risk that the normal and potentially pathogenic, inhabitants of the nose, throat and the back of the mouth, will descend into the lung, resulting in a potentially life-threatening pneumonia ( Anatomy and Physiology, 2013, p. 139).
The function of the mucosa is to warm and humidify air entering through the nose as well as to help to filter out unwanted particles in the air.7 people found this useful. Edit.he function of the respiratory system is to allow gas exchange it, taking oxygen into the blood and removing carbon dioxide from the blood. The oxygen absorbed is used by the â¦. 30 people found this useful.