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.

 
        A) Tibialis posterior
 
        B) Semitendinosus
 
        C) Quadratus lumborum
 
        D) Obturator externus
 
        E) Gastrocnemius
 

 

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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

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A) Tibialis posterior

This answer is incorrect.

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

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B) Semitendinosus

This answer is incorrect.

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

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C) Quadratus lumborum

This answer is correct.

The muscles of the lower extremity which typically receive innervation from spinal segment l2 include iliacus, psoas major, quadratus lumborum, sartorius, rectus femoris, vastus lateralis, vastus medialis, vastus intermedius, pectineus, adductor longus, adductor brevis, adductor magnus, and gracilis  (See References)

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D) Obturator externus

This answer is incorrect.

Obturator externus typically receives innervation from spinal segments L3 and L4  (See References)

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E) Gastrocnemius

This answer is incorrect.

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

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References:

1. Moore, K.L. (1992). Clinical Oriented Anatomy, 3rd Edition. Williams & Wilkins, Baltimore. (ISBN:068306133X)

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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