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Peripheral Nervous System and Neurologic Exam - Question 6

Topic: Anatomy

Created on Sunday, August 15 2010 by jdmiles

Last modified on Sunday, August 15 2010.

Absent reflexes are most characteristic of:

 
        A) Myopathy
 
        B) Neuropathy
 
        C) A lesion in the spinal cord
 
        D) A lesion in the brain
 

 


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This question was created on August 15, 2010 by jdmiles.
This question was last modified on August 15, 2010.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Myopathy

This answer is incorrect.


Decreased or absent reflexes are associated with lesions of nerves, nerve roots, and plexi. In brain or spinal cord lesions, reflexes are often hyperactive. In muscle disease (myopathy), reflexes are appropriate for the strength or weakness of the particular muscle.  (See References)

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B) Neuropathy

This answer is correct.


Decreased or absent reflexes are associated with lesions of nerves, nerve roots, and plexi. In brain or spinal cord lesions, reflexes are often hyperactive. In muscle disease (myopathy), reflexes are appropriate for the strength or weakness of the particular muscle.  (See References)

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C) A lesion in the spinal cord

This answer is incorrect.


Decreased or absent reflexes are associated with lesions of nerves, nerve roots, and plexi. In brain or spinal cord lesions, reflexes are often hyperactive. In muscle disease (myopathy), reflexes are appropriate for the strength or weakness of the particular muscle.  (See References)

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D) A lesion in the brain

This answer is incorrect.


Decreased or absent reflexes are associated with lesions of nerves, nerve roots, and plexi. In brain or spinal cord lesions, reflexes are often hyperactive. In muscle disease (myopathy), reflexes are appropriate for the strength or weakness of the particular muscle.  (See References)

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References:

1. Preston, D.C., and Shapiro, B.E. (2005). Electromyography and Neuromuscular Disorders: Clinical-Electrophysiologic Correlations, 2nd Edition. Elsevier, Philadelphia. Chapter 2.(ISBN:075067492X)Advertising:
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anatomy
Peripheral Nervous System and Neurologic Exam - Question 6
Question ID: 10081506
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 08/15/2010
Modified: 08/15/2010
Estimated Permutations: 0

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