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BIO 183-Special senses f09 - Special senses 1 General...

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Special senses 1. General characteristics - All located in the head via CN’s - 5 special senses 2. Senses a. Olfaction Location: Olfactory mucosa (5cm 2 )
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- 5 special senses 2. Senses a. Olfaction Location: Olfactory mucosa (5cm 2 ) Stimulant: Odorants Nerve: CN I
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Cells: Olfactory receptors (1x10 7-9 ) Nerve: CN I *Hyposmia: reduction of smell b. Gustation (taste) Sour, sweet, salty, bitter, umami Location: Taste buds
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*Hyposmia: reduction of smell b. Gustation (taste) Sour, sweet, salty, bitter, umami Location: Taste buds 4 types:
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Cells: Olfactory receptors (1x10 7-9 ) Nerve: CN I b. Gustation (taste) Sour, sweet, salty, bitter, umami Location: Taste buds 4 types: Vallate Fungiform Foliate Filiform
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4 types: Vallate Fungiform Foliate Filiform Stimulants: tastants Cells: Gustatory cell Nerve: CN VII, IX, X *V-gen. sense
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Stimulants: tastants Cells: Gustatory cell Nerve: CN VII, IX, X *V-gen. sense *Taste aversion: taste = emotion
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c. Vision * > ½ of sensory receptors are in eyes Location: Eyeball (bony orbit)
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