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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) Gluteus medius
 
        B) Gluteus maximus
 
        C) Adductor brevis
 
        D) Obturator externus
 
        E) Tensor fasciae latae
 

 


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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) Gluteus medius

This answer is incorrect.


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

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B) Gluteus maximus

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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C) Adductor brevis

This answer is incorrect.


Adductor brevis typically receives innervation from spinal segments 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) Tensor fasciae latae

This answer is incorrect.


Tensor fasciae latae typically receives innervation from spinal segments L4 and L5  (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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