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TASTE.MCQ
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1993-08-06
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D:Created 14.51 06/08/1993
D:Subject : Physiology
D:Topic : Taste
D:Level : Moderate
D:
D:Authors : Department of Physiology
D: The University
D: Leeds LS2 9NQ
I:MCQ SB 1
G:3
G:1:Dental Students
Q:1
G:2:Medical Students
Q:1
G:3:Science Students
Q:1
T:A
L:2
#:1
G: 10464 1 2 3
S:1
:Taste:
B:N:5
B:1:T:2
:is mediated by sensory fibres of the glossopharyngeal and facial
: nerve
B:2:F:1
:buds at the back of the tongue are sensitive to sweet substances
B:3:T:1
:buds contain sensory cells which divide regularly
B:4:T:1
:is mediated by polymodal primary afferent fibres
B:5:T:1
:afferents project to the solitary tract in the medulla
F:10
:The glossopharyngeal nerve innervates the base of the tongue, the
:site of taste buds on the vallate papillae. The facial nerve innervates
:the main part of the tongue. Bitter, sour, salty and sweet taste are
:greatest at the base, sides, front and tip of the tongue respectively.
:These sensations are mediated by polymodal fibres which project to the
:solitary tract in the medulla. The sensory cells in taste buds are
:replaced every tens days.
:Each taste bud contains some 40-60 cells most of which are sensory.
:Nerve fibres divide to innervate several sensory cells, and each taste
:bud is innervated by about 50 nerve fibres.
E:------
::