Question

The inner layer of nasal cavity is coated with epithelial cells that secrete mucus.

What is the importance of the secretion?

Answer 1

It helps prevent allergens and infections from invading the nasal cavity and spreading to other body structures, for example the lungs. The mucus secreted by and which lines the mucosa provides a physical barrier against invasion by pathogens (harmful microorganisms)

Step-by-step explanation:

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