Lower extremity muscle function and innervation 08

Topic: Anatomy

Created on Monday, September 22 2008 by jdmiles

Last modified on Monday, September 22 2008.

 
        A) Semimembranosus
 
        B) Semitendonosus
 
        C) Short head of biceps femoris
 
        D) Quadriceps femoris
 
        E) Both heads of the biceps femoris
 

 

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This question was created on September 22, 2008 by jdmiles.
This question was last modified on September 22, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) semimembranosus

This answer is incorrect.

Semimembranosus receives its innervation from the tibial division of the sciatic nerve.  (See References)

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B) semitendonosus

This answer is incorrect.

Semitendonosus receives its innervation from the tibial division of the sciatic nerve.  (See References)

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C) short head of biceps femoris

This answer is correct.

The short head of the biceps femoris receives its innervation from peroneal fibers in the sciatic nerve.  (See References)

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D) quadriceps femoris

This answer is incorrect.

The quadriceps are innervated by the femoral nerve.  (See References)

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E) both heads of the biceps femoris

This answer is incorrect.

Only the short head of the biceps femoris receives its innervation from the peroneal division of the sciatic nerve. The long head is innervated by the tibial division of sciatic nerve.  (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. (ISBN:075067492X)

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anatomy
Lower extremity muscle function and innervation 08
Question ID: 092208164
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/22/2008
Modified: 09/22/2008
Estimated Permutations: 600