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) Quadratus lumborum
 
        B) Vastus lateralis
 
        C) Popliteus
 
        D) Flexor digitorum longus
 
        E) Obturator externus
 

 

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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) 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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B) Vastus lateralis

This answer is incorrect.

Vastus lateralis typically receives innervation from spinal segments L2, L3, and L4  (See References)

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C) Popliteus

This answer is incorrect.

Popliteus typically receives innervation from spinal segments L4, L5, and S1  (See References)

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D) 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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E) Obturator externus

This answer is incorrect.

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