Do pseudounipolar neurons have one axon and one dendrite?

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Mega69
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Do pseudounipolar neurons have one axon and one dendrite?

Post by Mega69 » Sat May 22, 2010 2:17 pm

Hello,
wikipedia says that pseudounipolar neurons contain "a long dendrite and a short axon"
( http://en.wikipedia.org/wiki/Pseudounipolar_neuron )

instead the site of the university of Washigton says that pseudounipolar cells "have 2 axons rather than an axon and dendrite"
( http://faculty.washington.edu/chudler/cells.html )

Who is right????????????????? :shock:

thanks

plasmodesmata11
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Post by plasmodesmata11 » Sun May 23, 2010 1:52 am

well, it says that the axon and dendrite are structurally and functionally the same save for the fact that, apparently, dendrites carry impulses towards the soma, whereas axons carry them away. it's a bit picky, but i guess wiki is right.

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MrMistery
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Post by MrMistery » Sun May 30, 2010 1:07 pm

the way I learned it is like this. A pseudounipolar neuron has one axon that divides in two. the part before the cell body is functionally a dendrite and structurally an axon.
If you really want to classify it you probably want to consider it an axon, since it has myelin and it conducts action potentials.
It definitely does not have 2 axons - it's only one that divides in two.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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