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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 L4 spinal segment?

 
        A) Gastrocnemius
 
        B) Plantaris
 
        C) Gluteus medius
 
        D) Flexor digitorum brevis
 
        E) Tibialis posterior
 

 


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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) Gastrocnemius

This answer is incorrect.


Gastrocnemius typically receives innervation from spinal segments 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) Gluteus medius

This answer is incorrect.


Gluteus medius typically receives innervation from spinal segments L5 and S1  (See References)

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D) 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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E) Tibialis posterior

This answer is correct.


The muscles of the lower extremity which typically receive innervation from spinal segment l4 include quadratus lumborum, tensor fasciae latae, rectus femoris, vastus lateralis, vastus medialis, vastus intermedius, adductor longus, adductor brevis, adductor magnus, obturator externus, tibialis anterior, popliteus, and tibialis posterior  (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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