Plate 16.297 Olfactory Mucosa
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Peer Review Status: Externally Peer Reviewed
Rodent, 10% formalin, H. & E., 218 x.
Olfactory epithelium: Thick pseudostratified epithelium containing (1) sustentacular (supporting) cells, (2) bipolar receptor neurons, and (3) basal cells. Cells are densely packed and difficult to differentiate in thick sections. The nuclei of these cells are layered (from the outside) in the order given above. No goblet cells are located in this region, but the area is flushed by seromucous glands located beneath the epithelium.
Glands of Bowman*: Located in the lamina propria. Branched tubuloalveolar glands that secrete a seromucus. The secretions keep the surface moist, facilitate solution of substances being smelled, and subsequently cleanse the olfactory receptors of the olfactory stimulus.
Olfactory nerve fibers: Non-myelinated axons of bipolar receptor neurons. Nerve bundles are located deep in the lamina propria.
*Bowman was a nineteenth-century English anatomist.
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