Lec23 - GUSTATION(TASTE Exam 3 Thurs May 1 Review session Tomorrow Wed 4/30 4 5:30 PM in Mod Lang Room 311 The final exam is worth 23 of your final

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April 29, 2008 GUSTATION (TASTE) Exam 3: Thurs. May 1 Review session : Tomorrow: Wed. 4/30, 4- 5:30 PM in Mod Lang, Room 311. The final exam is worth 23% of your final grade. There will be 7 questions (rather than 6).
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April 29, 2008 GUSTATION (TASTE) 1. How does gustation work? Are different tastes represented at different locations on the tongue? 1. What are the basic dimensions of taste? Are there opponent processes in taste? 3. What is flavor as opposed to taste? 4. What causes individual differences in taste? 5. Why is it rare to lose the sense of taste?
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Stimulus for taste: soluble substances” substances that dissolve on contact with saliva. without saliva, food seems taste-less . Saliva chemically resembles salt water. Sodium content varies across individuals, accounting for some differences in taste
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Tongue: receptor sheet for taste Papillae: structures on tongue; 4 kinds; contain taste buds. Taste buds: composed of taste cells. > 1 nerve fiber per taste bud. Taste cells : Many per taste bud. Their tips stick into taste pore. Receptors sites located at tips. Transduction
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Papillae: Rounded bumps that rise above the surface of the tongue. for a good view: coat tongue with milk or ice cream
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Four kinds of Papillae Don’t contain taste buds 1. Filiform small bumps; center of tongue Contain taste buds 2. Fungiform mushroom shaped; tips and side of tongue; contain taste buds 3. Foliate folds along sides and middle of tongue; contain taste buds 4. Circumvallate flat mounds surrounded by trench; back of tongue; contain taste buds
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10 K on tongue of humans chickens: 24 catfish: 175K on external surface Short life span: average = 10 days! Composed of taste cells whose tips protrude into taste pore
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This note was uploaded on 04/30/2008 for the course PSYC 329 taught by Professor Peterson during the Spring '08 term at University of Arizona- Tucson.

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Lec23 - GUSTATION(TASTE Exam 3 Thurs May 1 Review session Tomorrow Wed 4/30 4 5:30 PM in Mod Lang Room 311 The final exam is worth 23 of your final

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