1. What is ventilation?: Answer inspiration and expiration 2. What is compliance?: Answer ease of lung expansion 3. What is diffusion?: Answer O2 and CO2 move across the alveolar-capillary membrane 4. What does an ABG test?: Answer the efficiency of gas transfer 5. What do mixed venous blood gasses measure?: Answer O2 supply to tissues 6. What are two methods that monitor CO2?: Answer capnography and CO2 7. Name five defense of the respiratory system.: Answer filtration of air (nasal hairs), mucociliary clearance system, cough reflex, bronchoconstriction, alveolar macrophages 8. In the elderly, the following may be true as far as differences in the respiratory system. (select all that apply). A) barrel chest