A nurse is caring for a client who has frequent upper respiratory infections. Which structure is most helpful in protecting against infection?
A) Cilia
B) Sinus cavity
C) Tonsils
D) Turbinates
C
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Tonsils and adenoids do not contribute to respiration but protect against infection. Palatine tonsils are composed of lymphoid tissue. Cilia are fine hairs that move particles and liquid, preventing irritation and contamination of the airway. Sinuses are nasal cavity structures. Turbinates warm and add moisture to the inspired air.
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