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25 Cards in this Set
- Front
- Back
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Where are taste buds located (be specific)?
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lateral margins of Papillae
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What are the 4 Papillae types?
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Filliform, Fungiform, Foliate, Circumvallate
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What is the life span of Taste buds?
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about 10 days
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What will replace the dying taste receptor cells?
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Basal cells
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What is responsible for someone tasting something salty?
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influx of Na+ thru Amiloride-sensitive Na+ channels
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How is Sour taste experienced?
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elicited by acids, depolarization of cell due to closure of voltage dependent K+ channels
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__________taste= voltage dependent K+channel closure
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Sour
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Amiloride sensitive Na+ channels allowing influx of Na+= ____________________.
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Salty taste
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Activation of adenylate cyclase that causes depolarization of receptor cells by closing K+ channels?
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Sweet
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Activation of PKC, generates an IP3, influx of Ca+ and activation of afferent nerve terminal at base of receptor cell?
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Bitter
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_____________taste=activation of PKC
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Bitter
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activation of adenylate cyclase=_____________________ taste.
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Sweet
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CN VII innervates the anter. 2/3 of the tongue for what tastes?
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sweet, sour, salty
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CN IX innervates the post 1/3 tongue for what?
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sour and bitter
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What is responsible for innervating the epiglottis and pharyngeal walls?
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CN X
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CN VII Pseudounipolar Neurons are located in _____________________.
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Geniculate Ganglion
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CN IX are located in ________________ ganglion.
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Inferior (Petrosal) Ganglion
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CN X are located in __________________ganglion.
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Inferior (Nodose) Ganglion
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Axons of second neurons in Gustatory Nucleus ascend in ________________tract and terminate in _______________of thalamus.
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Solitario-Thalamic tract, to VPM
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VPM projects to Gustatory area located where?
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btwn anterior insula and frontal operculum in ipsi cortex
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Taste fibers that pass from Solitary nucleus to Amygdala pass via __________________________.
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Pedunculopontine Nucleus of Reticular Formation
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Where do multiple flavor related signals converge?
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in Orbital Cortex
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What is hypogeusia?
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decreased sensation of taste
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What is total ageusia?
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loss of all taste sensation
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What is partial ageusia?
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loss of a particular taste sensation
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