GENERAL HISTOLOGY

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. The nasal cavity and mouth join at the area in the back of the throat called the pharynx (FAR-inks).

Detailed explanation-2: -The tissue that lines the nasal cavity, called the nasal epithelium, moistens, warms, and further cleanses the inhaled air.

Detailed explanation-3: -The major function of the nose is to warm and humidify air before it reaches to the lungs for gas exchange. Conditioning of inspired air is achieved through evaporation of water from the epithelial surface. The continuous need to condition air leads to a hyperosmolar environment on the surface of the epithelium.

Detailed explanation-4: -Air exits the nasal cavities via the internal nares and moves into the pharynx. Several bones that help form the walls of the nasal cavity have air-containing spaces called the paranasal sinuses, which serve to warm and humidify incoming air.

Detailed explanation-5: -Air enters the body through your mouth and nose. The air is warmed, moistened and filtered by mucous secretions and hairs in the nose. The larynx sits at the top of the trachea. It contains your vocal cords.