Motor tracts 1

Topic: Anatomy

Created on Thursday, August 31 2006 by jdmiles

Last modified on Wednesday, December 31 1969.

 
        A) Fine control of muscles of the body
 
        B) Control of head and eye movements
 
        C) Control of muscles of the neck, shoulder, and upper trunk
 
        D) Facilitating tone of axial extensor muscles
 
        E) Inhibiting tone of axial muscles
 

 

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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

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A) fine control of muscles of the body

This answer is incorrect.

The function 'fine control of muscles of the body' is primarily served by the Lateral Corticospinal Tract.  (See References)

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B) control of head and eye movements

This answer is incorrect.

The function 'control of head and eye movements' is primarily served by the Medial Vestibulospinal Tract.  (See References)

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C) 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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D) 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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E) inhibiting tone of axial muscles

This answer is incorrect.

The function 'inhibiting tone of axial muscles' is primarily served by the Lateral Reticulospinal 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)

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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