Olfactory organ (organum olfactus) is the peripheral regions of the olfactory analyzer and receives chemical stimuli in contact with the nasal cavity of steam or gas. The olfactory epithelium (epithelium olfacctorium) is located in the upper part of the nasal passage and caudineural department of the nasal septum, the mucosa of the nasal cavity. This department is known as the olfactory region of nasal mucosa (regio olfactoria tunicae mucosae nasi). It contains the olfactory glands (glandulae olfactoriae).
The olfactory epithelium contains three types of cells: olfactory, supporting and basal. The olfactory cells are shaped veretentsa at one end to the mucosal surface of the olfactory vesicles are covered with cilia. The other end of the olfactory cells in the nerve fiber passes, and they, in turn, gathering in clusters to form the olfactory nerves (nervi olfactorii). Through them the annoyance comes in the primary olfactory center, and then - to the cortical end of the olfactory analyzer.
Olfactory receptors of nasal mucosa are able to perceive thousands of different odors.
a., aa. — arteria, arteriae (artery, the artery)
lig., ligg. — ligamentum, ligamenta (ligament, the ligaments)
m., mm. — musculus, musculi (muscle, the muscle)
n., nn. — nervus, nervi (nerve, the nerve)
r., rr. — ramus, rami (branch)
s. — seu (or)
v., vv. — vena, venae (vienna)