Question

what is the function of the hairs located in the nasal cavity?
detect air pressure
detect odors
filter the air
provide a mucus barrier
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Explanation:

The nasal cavity hairs (nasal vibrissae) act as a physical barrier. They trap large particles like dust, pollen, and debris in the inhaled air. Detecting air pressure is not their role. Detecting odors is mainly by olfactory receptors. Providing a mucus barrier is more about the nasal mucosa rather than the hairs.

Answer:

filter the air