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) Cortical control of motor cranial nerves
 
        C) Motor control, with more effect over flexor than extensor muscles
 
        D) Facilitating tone of axial extensor muscles
 
        E) Control 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 incorrect.

The function 'inhibiting tone of axial muscles' is primarily served by the Lateral Reticulospinal Tract.  (See References)

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B) cortical control of motor cranial nerves

This answer is correct.

The major function of the Lateral Corticobulbar Tract is cortical control of motor cranial nerves.  (See References)

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C) 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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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) 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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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