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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 S2 spinal segment?

 
        A) Superior gemellus
 
        B) Obturator internus
 
        C) Extensor hallucis longus
 
        D) Quadratus femoris
 
        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




A) Superior gemellus

This answer is incorrect.


Superior gemellus typically receives innervation from spinal segments L5 and S1  (See References)

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B) Obturator internus

This answer is incorrect.


Obturator internus typically receives innervation from spinal segments L5 and S1  (See References)

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C) 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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D) Quadratus femoris

This answer is incorrect.


Quadratus femoris typically receives innervation from spinal segments L5 and S1  (See References)

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E) Flexor digitorum longus

This answer is correct.


The muscles of the lower extremity which typically receive innervation from spinal segment s2 include piriformis, gluteus maximus, semitendinosus, semimembranosus, biceps femoris, peroneus longus, peroneus brevis, gastrocnemius, soleus, plantaris, flexor hallucis longus, flexor digitorum longus, abductor hallucis, flexor digitorum brevis, abductor digiti minimi, quadratus plantae, lumbricals, flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis, plantar interossei, and dorsal interossei  (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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