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SlideshowReport

Olfactory structures in the human nose.

Description
Odour molecules dissolve in a layer of mucus that coats the olfactory receptor cells. The molecules bind to protein receptors on the membrane of cilia that extend from the olfactory receptor cells. Action potentials in the olfactory receptor cells are conducted to cells in the olfactory bulb, and from there to the brain for interpretation. Basal cells periodically replace dead or damaged olfactory receptor cells.
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