This image (HA1) is a frontal section through one of the nasal cavities of a rabbit. The cartilage of the nasal septum is at the left and the nasal cavity (N) contains three conchae (arrows). These bones are also called turbinates because they create turbulent air flow. In HA1, the upper two turbinates appear unattached to the lateral nasal wall because of the plane of the section. O identifies the oral cavity. The bone that separates the nasal and oral cavities is the hard palate (hp). At the upper end of the nasal septum (HA1L), the epithelium has no goblet cells. This is olfactory epithelium (not shown). It is tall pseudostratified columnar epithelium with non-motile cilia. The cilia play a role in the mechanism of olfaction.