Which of the following describes the function of cilia?
A. Tiny structures in the airways that trap and hold foreign material
B. Composed of macrophages and destroy inhaled pathogens
C. Tiny hair-like structures in the airways that push mucus toward the pharynx
D. Flap-like structures that close off the larynx during swallowing
E. Mucus-secreting cells in the lower bronchial tree
Answer: C
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What will be an ideal response?
If the respiratory therapist notices the reservoir bag on a nonrebreather mask is failing to partially collapse with each breath, the therapist should
A. remove the one-way valve disk B. tighten the elastic straps on the mask C. obtain a new nonrebreather mask D. increase oxygen flow to the reservoir