Finding a radial pulse in an infant is difficult, so a pulse is more commonly taken

Oxygen that is administered through a nasal cannula would be of LEAST benefit to a patient who:

A: is in need of long-term oxygen therapy. B: is breathing greater than 12 times per minute. C: breathes through his or her mouth. D: has COPD and an oxygen saturation of 94%.

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