Motor tracts 1

Topic: Anatomy

Created on Thursday, August 31 2006 by jdmiles

Last modified on Wednesday, December 31 1969.

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

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A) inhibiting tone of axial muscles

This answer is correct.

The major function of the Lateral Reticulospinal Tract is inhibiting tone of axial muscles.  (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 incorrect.

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

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D) 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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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)

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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