Nasal cavities -- two chambers for filtering, warming and humidifying inspired air.

• Note its division by the nasal septum and the projecting turbinates (conchae) which protrude into the cavities and serve to increase both the surface area and the air turbulence.
• In the nasal mucosa covering the cartilage of these structures
• Identify the
  • Blood-filled venules, the serous glands, and
  • The pseudostratified, ciliated columnar epithelium (shown below).

At the dorsal surface of the nasal cavities, the lining epithelium is modified as olfactory epithelium with cells for olfactory reception, although it does not yet appear to be fully differentiated in this fetal tissue.

Next is the larynx.