Answer to Question 1
decrease kVp
Rationale: Pneumothorax is an abnormal amount of air in the pleural cavity. When it becomes large in size, it is classified as a destructive pathology. A decrease in technical settings will help prevent overexposure.
Answer to Question 2
inferior nasal conchae
Rationale: The inferior nasal conchae are considered separate facial bones, but function to warm and filter the incoming air like the superior and middle nasal conchae on the ethmoid bone.