The nursing instructor is teaching a pre-nursing pathophysiology class. The class is covering the respiratory system. The instructor explains that the respiratory system is comprised of both the upper and lower respiratory system. The nose is part of the upper respiratory system. The instructor continues to explain that the nasal cavities have a vascular and ciliated mucous lining. What is the purpose of the vascular and ciliated mucous lining of the nasal cavities?
A) Cool and dry expired air
B) Move mucous to the back of the throat
C) Moisten and filter expired air
D) Warm and humidify inspired air

Question

Quizplus · Accepted Answer

The vascular and ciliated mucous lining of the nasal cavities serves to warm and humidify the air that is breathed in (inspired air), making it easier for the lungs to process. This lining helps in adjusting the temperature and moisture level of the air entering the respiratory system to match the body's internal environment.

The Nursing Instructor Is Teaching a Pre-Nursing Pathophysiology Class