MICROANATOMY

Detailed explanation-1: -Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.

Detailed explanation-2: -Ciliated epithelium: During the forward stroke, the tips of the cilia contact the gel layer, thus propelling it downstream, towards the mouth. This movement of mucus moves at approximately 1mm per minute in peripheral airways, clearing the healthy lung in less than 24 hours.

Detailed explanation-3: -Cilia are complex structures of the paranasal sinus mucosa in which its function is critical to respiratory defense. Cilia beat in a coordinated manner to clear the paranasal sinus cavities and upper airway of the mucus blanket that contains the pathogens and debris that are continually inspired in normal respiration.