Ahmed103
Forum Newbie
Topics: 4
Posts: 16
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Choose best choice or choices :
In the visual cortex ,responses of single neurones evoked by retinal stimuli:
(1) may be maximal for a border oriented in a particular direction .
(2) would reflect just the activity of rod pathways .
(3) would occur only when stimuli appeat in a circumscribed area within the visual field .
(4) are produced by activity originating in only one retina .
answer is 1 & 3 ,please explain ?
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The musculature of the cardinal (proximal) stomach :
(1) relaxes during each swallow
(2) contracts in a peristaltic manner in cordination with the caudal (distal) stomach during emptying of a meal .
(3) becomes more distensible when CCK increases in blood .
(4) exhibits contractions and relaxations that can not be altered by vagotomy .
answer is 1 & 3 ,why 2 is false ?
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Cortical evoked potentials :
(1) represent summed action and synaptic potentials of cortical and subcortical neurons .
(2) can be produced by electrical stimulation of the median nerve .
(3) help monitor brain stem as well as cortical auditory function .
(4) can be recorded in a comatosed patient .
answer is all are true ,why 2 & 4 are correct
Many thanks for your help 
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| reet
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Posts: 1,411
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 no replies?????????
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| maribel
Forum Newbie
Topics: 2
Posts: 8
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a kind of sensorial evoked potential could be evoked
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| maribel
Forum Newbie
Topics: 2
Posts: 8
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contraction of the proximal and distal stomach at the same time dont allow the stomach gets emptied
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| nadiabarati
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