Smell
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Created by:
scandoscott on February 17, 2011
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8 terms
Terms | Definitions |
|---|---|
 Olfactory tract | the path along which the olfactory receptors send their electrical messages to the brain. |
| Olfactory cells | sensory receptors for smell, constantly replaced every 30 to 60 days. when stimulated by airborne molecules, the stimulation gets passed to its axons which bundle to create the olfactory nerve |
| Olfactory hairs | parts of teh olfactory receptors that respond to inhaled chemicals the olfactory hairs, cilia that porject from the dendrite |
| Olfactory mucosa | Site of most of the receptors for the sense of smell. It occupies the superior aspect of the nasal cavity between the superior nasal conchae, roof of the nose, and upper part of the nasal septum and is composed of ffime cell types: receptor cells, supporting cells, and basal cells. |
| Odor molecules | Bind to proteins in the receptor hair membrane and cause the cell to create a chemical which binds to Na+ gates on the inside of the membrane, causing them to open. |
| Mucus | viscous fluid secreted by mucous membranes that functions to protect and lubricate the membrane |
| Basal cells | Are the cells that develop into olfactory receptor cells, continuously divide. |
| Supporting cells | cells that surround and wrap neurons |
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