What happens to the air in the nasal membrane?

The nasal mucosa contains a large number of blood vessels that warm the passing air. The upper layer of the nasal cavity membrane is formed by the cells of the ciliary epithelium, due to which the air is humidified and cleaned by cilia from dust particles. The glands of the mucous membrane secrete special bactericidal substances, and on the surface of the mucous membrane there are a large number of leukocytes, which also destroy bacteria. Thus, the air in the nasal cavity is cleared of many bacteria.

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