Editing Nasal concha (section)

===Immunological role===
The [[respiratory epithelium]] that covers the erectile tissue (or [[lamina propria]]) of the conchae plays a major role in the body's first line of [[immunological]] defense. The [[respiratory epithelium]] is partially composed of [[mucus]]-producing [[goblet cell]]s. This secreted mucus covers the nasal cavities, and serves as a filter, by trapping air-borne particles larger than 2 to 3 [[micrometers]]. The respiratory epithelium also serves as a means of access for the [[lymphatic system]], which protects the body from being infected by viruses or bacteria.<ref name="Gray"/>