anterior nasal passage

The anterior nasal passage is the front part of your nasal cavity, extending from the nostrils inward. It serves as the main route for air to enter and exit your respiratory system. This passage is lined with mucous membranes that warm, humidify, and filter the air before it reaches your lungs. It also contains tiny hair-like structures called cilia that help trap dust and pathogens. The anterior nasal passage plays a key role in breathing, smelling, and protecting your respiratory system from foreign particles and germs.