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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 Medial Reticulospinal Tract?

 
        A) Motor control, with more effect over flexor than extensor muscles
 
        B) Inhibiting tone of axial muscles
 
        C) Control of neck, shoulder, and upper trunk muscles, as well as coordination of head and eye movements
 
        D) Fine control of muscles of the body
 
        E) Facilitating tone of axial extensor 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




A) motor control, with more effect over flexor than extensor muscles

This answer is incorrect.


The function 'motor control, with more effect over flexor than extensor muscles' is primarily served by the Rubrospinal Tract.  (See References)

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B) 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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C) 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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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) facilitating tone of axial extensor muscles

This answer is correct.


The major function of the Medial Reticulospinal Tract is facilitating tone of axial extensor muscles.  (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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