The nasal mucosa is a mucus membrane which covers the nasal cavity or the inside of the nose. It may also be referred to as the respiratory mucosa and produces a sticky mucus which forms part of the innate immune system. The mucosa and the mucus it secretes provides a barrier against foreign pathogens entering the respiratory system. The mucus traps the pathogens and cells in the mucosa mount an immune response to destroy the pathogens before they invade the nasal cavity and other organs in the respiratory system.
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