1. Ventilation: Answer Process of inspiration and expiration 2. Control of Ventilation: Answer Hypercapnia (primary) Carbon dioxide levels in the blood increase. Carbon dioxide easily diffuses into CSF. -Hypoxemia (secondary) Marked decrease in oxygen Chemoreceptors respond. Important control mechanism in individuals with chronic lung disease—move tohypoxic drive 3. Gas Exchange: Answer Flow of gases between the alveolar air and blood (externalrespiration) Po2—partial pressure of oxygen Pco2—partial pressure of carbon dioxide 4. Pneumonia: Answer Pneumonia (PNA) is a condition where the parenchyma of the lungbecomes inflamed. Pulmonary parenchyma is a term that refers to the parts of the lungs involved in gas transfer. 5. Classification of Pneumonia: Answer cause: viral, bacterial, fungal