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Spinal segments innervating muscles of the lower extremity 2

Topic: Anatomy

Created on Wednesday, August 30 2006 by jdmiles

Last modified on Tuesday, November 4 2008.

Regarding the muscles of the lower extremity, which of the following muscles typically receives innervation from the L5 spinal segment?

 
        A) Adductor magnus
 
        B) Iliacus
 
        C) Superior gemellus
 
        D) Adductor longus
 
        E) Flexor digitorum brevis
 

 


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This question was created on August 30, 2006 by jdmiles.
This question was last modified on November 04, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Adductor magnus

This answer is incorrect.


Adductor magnus typically receives innervation from spinal segments L2, L3, and L4  (See References)

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B) Iliacus

This answer is incorrect.


Iliacus typically receives innervation from spinal segments L2 and L3  (See References)

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C) Superior gemellus

This answer is correct.


The muscles of the lower extremity which typically receive innervation from spinal segment l5 include obturator internus, tensor fasciae latae, gluteus maximus, gluteus medius, gluteus minimus, superior gemellus, inferior gemellus, quadratus femoris, semitendinosus, semimembranosus, biceps femoris, tibialis anterior, extensor hallucis longus, extensor digitorum longus, peroneus tertius, peroneus longus, peroneus brevis, popliteus, and tibialis posterior  (See References)

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D) Adductor longus

This answer is incorrect.


Adductor longus typically receives innervation from spinal segments L2, L3, and L4  (See References)

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E) Flexor digitorum brevis

This answer is incorrect.


Flexor digitorum brevis typically receives innervation from spinal segments S2 and S3  (See References)

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References:

1. Moore, K.L. (1992). Clinical Oriented Anatomy, 3rd Edition. Williams & Wilkins, Baltimore. (ISBN:068306133X)Advertising:
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anatomy
Spinal segments innervating muscles of the lower extremity 2
Question ID: 830200603
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 08/30/2006
Modified: 11/04/2008
Estimated Permutations: 0

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