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Cerebellar Anatomy 01

Topic: Anatomy

Created on Saturday, March 3 2007 by jdmiles

Last modified on Saturday, March 3 2007.

In the cerebellum, parallel fibers arise from:

 
        A) Stellate cells
 
        B) Purkinje cells
 
        C) Granule cells
 
        D) Pyramidal cells
 
        E) Golgi cells
 

 


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This question was created on March 03, 2007 by jdmiles.
This question was last modified on March 03, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Stellate cells

This answer is incorrect.


Stellate cells do not give rise to parallel fibers. Stellate cells are types of inhibitory interneurons. They receive input from parallel fibers, and synapse onto Purkinje cells.  (See References)

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B) Purkinje cells

This answer is incorrect.


Purkinje cells receive excitatory input from parallel fibers. They are not the source of parallel fibers.  (See References)

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C) Granule cells

This answer is correct.


Cerebellar granule cells, the most abundant neurons in the human brain, give rise to parallel fibers. Parallel fibers rise to the molecular layer of the cerebellar cortex and make excitatory synapses with Purkinje cells.  (See References)

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D) Pyramidal cells

This answer is incorrect.


Pyramidal cells are not found in the cerebellum.  (See References)

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E) Golgi cells

This answer is incorrect.


Golgi cells do not give rise to parallel fibers. Golgi cells receive input from parallel fibers, and feed back inhibitory signals to the granule cells from which the parallel fibers arise.  (See References)

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References:

1. Purves, D., Augustine, G.J., Fitzpatrick, D., Katz, L.C., LaMantia, A., McNamara, J., and Williams, S.M. (Eds.) (2001) Neuroscience. Sinauer Associates, Sunderland, MA.
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anatomy
Cerebellar Anatomy 01
Question ID: 030307152
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 03/03/2007
Modified: 03/03/2007
Estimated Permutations: 8400

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