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Lower extremity muscle function and innervation 1Topic: PharmacologyCreated on Monday, September 18 2006 by
Last modified on Monday, September 18 2006.
Which movement would be most affected by a lesion of the S1 and S2 spinal roots?
A) Knee extension B) Ankle eversion C) Ankle plantarflexion D) Knee flexion E) Hip flexion
This question was created on September 18, 2006 by .
This question was last modified on September 18, 2006.
ANSWERS AND EXPLANATIONS
A) knee extension
This answer is incorrect.
L3 and L4 are the spinal segments which most strongly affect knee extension. ( See References)
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B) ankle eversion
This answer is incorrect.
L5 and S1 are the spinal segments which most strongly affect ankle eversion. ( See References)
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C) ankle plantarflexion
This answer is correct.
Ankle plantarflexion is most strongly affected by the S1 and S2 spinal segments. ( See References)
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D) knee flexion
This answer is incorrect.
S1 is the spinal segment which most strongly affects knee flexion. ( See References)
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E) hip flexion
This answer is incorrect.
L1 and L2 are the spinal segments which most strongly affect hip flexion. ( See References)
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References:
| 1. Guarantors of Brain. (2000). Aids to the Examination of the Peripheral Nervous System, fourth edition. W.B. Saunders, Edinburgh. | |
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pharmacology
Lower extremity muscle function and innervation 1
Question ID: 69181
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved.
Created: 09/18/2006
Modified: 09/18/2006
Estimated Permutations: 0
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