The mucous membrane that lines the inner nasal cavity and performs chiefly immune, respiratory, and olfactory functions
Since nasal mucosa is the first site to come in contact with the substances from the inhaled air, it has the ability to confer protection against antigens. There are different ways to carry out this function:1
- Nonspecific protective mechanisms through the production of mucin the action of the ciliated cells to filter the air and trap materials to prevent them from moving across the respiratory passageway.
- Antimicrobial protection through chemical secretions, e.g. lysozymes, lactoferrin, peroxidases, interferons, etc.
1 Roecken M, Grevers G, Burgdorf W. 2003. Nasal polyps. In: Color Atlas of Allergic Diseases. Germany: Thieme. pCXLVIII.