Slide 2 Olfactory Epithelium
This pseudostratified columnar epithelium is composed of olfactory cells, sustentacular cells and basal cells. Modified cilia on the surface serve as olfactory receptors.

Bar = 30 Microns

Note that the olfactory epithelium is much thicker than the ordinary pseudostratified columinar ciliated epithelium of the respiratory system.
Expanded View