Question

Most inspired particles such as dust fail to reach the lungs because of the ________.

• A. Ciliated mucous lining in the nose
• B. Abundant blood supply to nasal mucosa
• C. Porous structure of turbinate bones
• D. Action of the epiglottis

Answer 1

The correct option is A

Ciliated mucous lining in the nose

Cilia and mucus along the inner wall of the nasal cavity trap and remove dust, thus filtering out the air that reaches the lungs.