The nasal cavity is a hollow space within the nose and skull that is lined with mucous membranes and cilia. It functions to warm, moisten, and filter the air entering the respiratory system.
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The nasal cavity is divided into two sections by the nasal septum.
Cilia in the nasal cavity move mucus and trapped particles towards the throat for expulsion.
The nasal cavity connects to several paranasal sinuses, which help lighten the skull and enhance voice resonance.
Olfactory receptors located in the upper part of the nasal cavity are responsible for the sense of smell.
Goblet cells in the mucous membrane produce mucus that traps dust, pathogens, and other airborne particles.