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Olfactory Pathway Sense of Smell

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Olfactory Pathway Sense of Smell Smell is the least understood of our senses. A. Stimulus ± Odorant or Odoriferous substances Physical Factors that affect the degree of stimulation 1. only volatile substances that can be sniffed into the nostril can be smelled. 2. the stimulating substances must be slightly water soluble. 3. substances must be at least slightly lipid soluble. € Olfactory apparatus consists of receptor cells, supporting cells and basal (stem) cells. ‡ Basal cells generate

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