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September 2, 2014

Homework Help: health

Posted by sarah on Saturday, November 12, 2011 at 1:22am.

Which of the following structures are tubes?
A. Frontal, maxillary, sphenoidal, ethmoidal
B. Eustachian, pharynx, bronchi
C. Cilia, adenoids, mucous, epiglottis
D. Apex, base, hilum

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