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) Abductor digiti minimi
 
        B) Biceps femoris
 
        C) Quadratus lumborum
 
        D) Obturator externus
 
        E) Flexor digitorum 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

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A) Abductor digiti minimi

This answer is incorrect.

Abductor digiti minimi typically receives innervation from spinal segments S2 and S3  (See References)

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B) Biceps femoris

This answer is correct.

The muscles of the lower extremity which typically receive innervation from spinal segment s1 include obturator internus, piriformis, gluteus maximus, gluteus medius, gluteus minimus, superior gemellus, inferior gemellus, quadratus femoris, semitendinosus, semimembranosus, biceps femoris, extensor hallucis longus, extensor digitorum longus, peroneus tertius, peroneus longus, peroneus brevis, gastrocnemius, soleus, plantaris, popliteus, and flexor hallucis brevis  (See References)

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C) Quadratus lumborum

This answer is incorrect.

Quadratus lumborum typically receives innervation from spinal segments T12, L1, L2, L3, and L4  (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) Flexor digitorum longus

This answer is incorrect.

Flexor digitorum longus 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)

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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