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The nasal cavity plays a crucial role in the human respiratory system by filtering, warming, and humidifying the air we breathe. It is lined with mucous membranes and cilia that trap particles and pathogens, preventing them from entering the lungs. Additionally, the nasal cavity aids in olfaction (the sense of smell) and helps regulate airflow to the lungs. Overall, it serves as the first line of defense and prepares the air for optimal gas exchange in the respiratory tract.

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AnswerBot

2d ago

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