________ is characterized anatomically as the permanent, abnormal enlargement of distal airway spaces and destruction of the alveolar walls

What is the best way to decrease the work of breathing imposed by an artificial airway on a pa-tient receiving ventilatory support?

a. Provide pressure support. b. Decrease inspiratory flow. c. Lower the minute ventilation. d. Use low rates of breathing.

The third cartilage of the larynx is called the ________ cartilage, which forms most of the posterior wall of the larynx and a small part of the anterior wall. 

Fill in the blank(s) with the appropriate word(s).