checmical senses_S12 - Chemical senses: Taste and olfaction...

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Chemical senses: Taste and olfaction
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Taste Taste - refers to stimulation of the taste receptor cells on taste buds. Not to be confused with flavor - a combination of taste and smell Apple and potato taste
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Taste buds located in papillae on the surface of the tongue In adult humans, taste buds are located almost exclusively along the outer edge of the tongue with only a very few in the center. Each papillae contains about 10 taste buds.
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Taste Receptor Cells Each taste bud contains about 50+ receptor cells.
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Taste Receptor types Old dogma? 5 th taste: umami Recent thinking
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How taste receptors work Receptors for different types of taste have different ways of "sensing" molecules. Salty : Na+ channels open Sour : H+ causes K+ channels to close Sweet, Bitter & Umami : G-protein linked receptors which release a 2nd messenger Net effect: Graded potentials or AP? Release of NT
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Nucleus tractus solitarius
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This note was uploaded on 03/29/2012 for the course PSY 308 taught by Professor Jones during the Spring '08 term at University of Texas at Austin.

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checmical senses_S12 - Chemical senses: Taste and olfaction...

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