The nasal cavity is a hollow space located within the nose, extending from the nostrils to the back of the throat. It serves as the primary pathway for air entering and exiting the respiratory system. The nasal cavity is lined with specialized mucous membranes that help filter, warm, and humidify the inhaled air, removing particles and providing moisture before it reaches the lungs. The nasal cavity also plays a role in the sense of smell, as it contains olfactory receptors that detect and transmit signals related to odors to the brain.

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