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Motor tracts 1

Topic: Anatomy

Created on Thursday, August 31 2006 by jdmiles

Last modified on Wednesday, December 31 1969.

Which of the following is a major function subserved by the Ventral Corticospinal Tract?

 
        A) Control of muscles of the neck, shoulder, and upper trunk
 
        B) Facilitating tone of axial extensor muscles
 
        C) Cortical control of motor cranial nerves
 
        D) Maintenance of balance
 
        E) Control of neck, shoulder, and upper trunk muscles, as well as coordination of head and eye movements
 

 


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This question was created on August 31, 2006 by jdmiles.
This question was last modified on December 31, 1969.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) control of muscles of the neck, shoulder, and upper trunk

This answer is correct.


The major function of the Ventral Corticospinal Tract is control of muscles of the neck, shoulder, and upper trunk.  (See References)

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B) facilitating tone of axial extensor muscles

This answer is incorrect.


The function 'facilitating tone of axial extensor muscles' is primarily served by the Medial Reticulospinal Tract.  (See References)

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C) cortical control of motor cranial nerves

This answer is incorrect.


The function 'cortical control of motor cranial nerves' is primarily served by the Lateral Corticobulbar Tract.  (See References)

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D) maintenance of balance

This answer is incorrect.


The function 'maintenance of balance' is primarily served by the Lateral Vestibulospinal Tract.  (See References)

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E) control of neck, shoulder, and upper trunk muscles, as well as coordination of head and eye movements

This answer is incorrect.


The function 'control of neck, shoulder, and upper trunk muscles, as well as coordination of head and eye movements' is primarily served by the Tectospinal Tract.  (See References)

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References:

1. Purves, D., Augustine, G.J., Fitzpatrick, D., Katz, L.C., Lamantia, A., McNamara, J.O., Williams, S.M. (Editors). (2004). Neuroscience. Sinauer Associates, Inc. Sunderland, MA. (ISBN:0878937250)Advertising:
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anatomy
Motor tracts 1
Question ID: 901200601
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 08/31/2006
Modified: 12/31/1969
Estimated Permutations: 0

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