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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 L3 spinal segment?

 
        A) Peroneus brevis
 
        B) Plantaris
 
        C) Adductor brevis
 
        D) Tibialis anterior
 
        E) Extensor hallucis longus
 

 


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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) Peroneus brevis

This answer is incorrect.


Peroneus brevis typically receives innervation from spinal segments L5, S1, and S2  (See References)

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B) Plantaris

This answer is incorrect.


Plantaris typically receives innervation from spinal segments S1 and S2  (See References)

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C) Adductor brevis

This answer is correct.


The muscles of the lower extremity which typically receive innervation from spinal segment l3 include iliacus, psoas major, quadratus lumborum, sartorius, rectus femoris, vastus lateralis, vastus medialis, vastus intermedius, pectineus, adductor longus, adductor brevis, adductor magnus, gracilis, and obturator externus  (See References)

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D) Tibialis anterior

This answer is incorrect.


Tibialis anterior typically receives innervation from spinal segments L4 and L5  (See References)

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E) Extensor hallucis longus

This answer is incorrect.


Extensor hallucis longus typically receives innervation from spinal segments L5 and S1  (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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