PATHOLOGY

Detailed explanation-1: -In the nostrils, air gets warmed and moistened. Tiny hairs in the nose called cilia (SIL-ee-uh) filter out dust and other particles.

Detailed explanation-2: -The nasal cavity consists of maxilla, bones, paranasal sinuses, vestibule, hard palate of palatine bone. The structure of the nasal cavity is so designed that it helps in maximizing the gaseous exchange and also purifies the air we breathe in.

Detailed explanation-3: -The role of the nasal cavity is to humidify and warm the inspired air. Also, as the air passes through, the nasal cavity removes minute airborne particles and other debris before the air reaches the lower airways. Columnar epithelium lines the nasal cavity.