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) Sartorius B) Adductor magnus C) Piriformis D) Gluteus minimus E) Iliacus
This question was created on August 30, 2006 by jdmiles.
This question was last modified on November 04, 2008.
ANSWERS AND EXPLANATIONS
A) Sartorius
This answer is incorrect.
Sartorius typically receives innervation from spinal segments L2 and L3 (
See References)
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B) Adductor magnus
This answer is incorrect.
Adductor magnus typically receives innervation from spinal segments L2, L3, and L4 (
See References)
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C) Piriformis
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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D) Gluteus minimus
This answer is incorrect.
Gluteus minimus typically receives innervation from spinal segments L5 and S1 (
See References)
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E) Iliacus
This answer is incorrect.
Iliacus typically receives innervation from spinal segments L2 and L3 (
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