1. Respirations that are characterized by alternating periods of deep and shallow breathing are a result of which respiratory mechanism: Answer Decreasedblood flow to the medulla oblongata 2. What pulmonary defense mechanism propels a mucous blanket that entrapsparticles moving toward the oropharynx: Answer Cilia 3. Which term is used to identify the movement of gas and air into and out ofthe lungs: Answer Ventilation 4. Aspiration is most likely to occur in the right mainstream bronchus becauseit: Answer extends vertically from the trachea 5. When an individual aspirates food particles, where would the nurse expectto hear decreased or absent breath sounds: Answer right lung 6. Which describes the pressure in the pleural space: Answer below atmospheric 7. What medical term is used for a condition that results from pulmonary hypertension, creating chronic pressure overload in the right ventricle: Answer corpulmonale 8. Which normal physiologic change occurs in the aging pulmonary system: