Explain the relationship between the structure and functions of the nasal cavity.

In the nasal cavity, the inhaled air is warmed and humidified, dust is retained and removed, microorganisms are destroyed, odor recognition, and reflex sneezing. To realize these functions, there are three turbinates in each half of the nasal cavity, which increase the surface of the mucous membrane; the mucosa is abundantly supplied with blood vessels and is covered with ciliated epithelium, the cilia of which remove dust particles, and the mucus has a bactericidal effect. There are olfactory receptors in the nasal cavity.

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