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Quick Scroll Anatomy ..gettin on ones nerves !!! 01.15.06 (2 years ago) #1
A patient presents with loss of sensation on skin over the forearm. Injury to which of the following cells would most likely affect the conduction of sensory information to the CNS?

1.Multipolar neurons
2.Bipolar neurons
3.Unipolar or pseudounipolar neurons
4.neurons in ventral horn
5.neurons in sympathetic chain ganglia
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Quick Scroll 01.15.06 (2 years ago) #2
answer shud be 2
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Quick Scroll 01.16.06 (2 years ago) #3
Comeon guys we need more replies here and with explanation preferably...its actually an easy question if you remember to think in terms of the sensory tracts(big time clue!!)
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Quick Scroll 01.16.06 (2 years ago) #4
I think its unipolar or pseudounipolar neurons .
The sensory stimulus is recieved first by Dorsal root ganglion cell..which is a pseudounipolar neuron.The other two cells involved are 2nd order[ in CNS] and 3rd order neurons[in thalamus] which are unipolar neurons.
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Quick Scroll 01.16.06 (2 years ago) #5
3. Unipolar or Pseudounipolar

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Quick Scroll 01.16.06 (2 years ago) #6
simv,

thanx:) thats the best use anyone has ever put a scanner to!

God bless you! smiley24.gif
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Quick Scroll 01.16.06 (2 years ago) #7
shriya wrote:
simv,

thanx:) thats the best use anyone has ever put a scanner to!

God bless you! smiley24.gif


m glad you guys like it. hehe somehow i love using this image stuff...especially when m watching a movie. its 'terminal' on star movies... nice one.
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Quick Scroll 01.17.06 (2 years ago) #8
Yes ans is 3(unipolar or pseudounipolar)...Im glad u guys got the clue and worked it out well...All the best to u!!!Thanks simv your diagram has spared the need of an explanation!
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Quick Scroll 01.17.06 (2 years ago) #9
I thought I should also say why the others r wrong ...
Multipolar neurons have several dendrites and one axon...seen most commonly in the CNS
Bipolar neurons have one dendrite and one axon and are seen specifically in Olfactory epithelium, the retina and the inner ear.
The other options r cheap distractors got nothing to do with the sensory system... ventral horn is to do with motor system and ofcourse sympathetic chain ganglia with sympathetic (autonomous nervous system)
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Quick Scroll 01.17.06 (2 years ago) #10
thats a good q and thanx simv for the picture! i have it encoded in my head now icon_smile.gif
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