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Muscles innervated by the median nerve

Topic: Anatomy

Created on Wednesday, August 9 2006 by

Last modified on Wednesday, December 31 1969.

Which of the following muscles is innervated by the median nerve?

 
        A) Pectoralis major
 
        B) Adductor pollicis
 
        C) Extensor pollicis brevis
 
        D) Pronator quadratus
 
        E) Serratus anterior
 

 


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This question was created on August 09, 2006 by .
This question was last modified on December 31, 1969.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) pectoralis major

This answer is incorrect.


Pectoralis major is innervated by the medial and lateral pectoral nerves, which arise from the brachial plexus  (See References)

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B) adductor pollicis

This answer is incorrect.


Adductor pollicis is innervated by the ulnar nerve  (See References)

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C) extensor pollicis brevis

This answer is incorrect.


Extensor pollicis brevis is innervated by the radial nerve  (See References)

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D) pronator quadratus

This answer is correct.


Pronator quadratus is innervated by the median nerve  (See References)

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E) serratus anterior

This answer is incorrect.


Serratus anterior is innervated by the long thoracic nerve, which arises from the brachial plexus  (See References)

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References:

1. Guarantors of Brain. (2000). Aids to the Examination of the Peripheral Nervous System, fourth edition. W.B. Saunders, Edinburgh.
2. Moore, K.L. (1992). Clinical Oriented Anatomy, 3rd Edition. Williams & Wilkins, Baltimore.
3. Preston, D.C., and Shapiro, B.E. (2005). Electromyography and Neuromuscular Disorders: Clinical-Electrophysiologic Correlations, 2nd Edition. Elsevier, Philadelphia.
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anatomy
Muscles innervated by the median nerve
Question ID: 809200601
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 08/09/2006
Modified: 12/31/1969
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