Upper extremity muscle function and innervation 04

Topic: Anatomy

Created on Sunday, November 9 2008 by jdmiles

Last modified on Sunday, November 9 2008.

 
        A) A lesion in the medial cord
 
        B) A C8 radiculopathy
 
        C) A stroke
 
        D) A C7 radiculopathy
 
        E) A lesion in the ulnar nerve
 

 

	= Go back to the top of the page.
	= Reload a different version of this question ().
	= Load a random question from the database.
	= Use this question as a template to create a totally NEW question.
	= Enter detailed rating for this question!
	= How users like you have rated this question.

This question was created on November 09, 2008 by jdmiles.
This question was last modified on November 09, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

---

A) a lesion in the medial cord

This answer is incorrect.

The fibrillations suggest an active peripheral nerve lesion. The pronator teres muscle receives innervation from the median nerve, the lateral cord, the upper and middle trunks, and the C6 and C7 nerve roots. The branch to pronator teres arises from the median nerve proximal to the origin of the anterior interosseous nerve.   (See References)

Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 

---

B) a C8 radiculopathy

This answer is incorrect.

The fibrillations suggest an active peripheral nerve lesion. The pronator teres muscle receives innervation from the median nerve, the lateral cord, the upper and middle trunks, and the C6 and C7 nerve roots. The branch to pronator teres arises from the median nerve proximal to the origin of the anterior interosseous nerve.   (See References)

Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 

---

C) a stroke

This answer is incorrect.

The fibrillations suggest an active peripheral nerve lesion. The pronator teres muscle receives innervation from the median nerve, the lateral cord, the upper and middle trunks, and the C6 and C7 nerve roots. The branch to pronator teres arises from the median nerve proximal to the origin of the anterior interosseous nerve.   (See References)

Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 

---

D) a C7 radiculopathy

This answer is correct.

The fibrillations suggest an active peripheral nerve lesion. The pronator teres muscle receives innervation from the median nerve, the lateral cord, the upper and middle trunks, and the C6 and C7 nerve roots. The branch to pronator teres arises from the median nerve proximal to the origin of the anterior interosseous nerve.   (See References)

Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 

---

E) a lesion in the ulnar nerve

This answer is incorrect.

The fibrillations suggest an active peripheral nerve lesion. The pronator teres muscle receives innervation from the median nerve, the lateral cord, the upper and middle trunks, and the C6 and C7 nerve roots. The branch to pronator teres arises from the median nerve proximal to the origin of the anterior interosseous nerve.   (See References)

Please log in if you want to rate questions.

 

 

 

 

References:

1. Preston, D.C., and Shapiro, B.E. (2005). Electromyography and Neuromuscular Disorders: Clinical-Electrophysiologic Correlations, 2nd Edition. Elsevier, Philadelphia. (ISBN:075067492X)

Advertising:

Please log in if you want to rate questions.

 

FrontalCortex.com -- Neurology Review Questions -- Neurology Boards -- Board Review -- Residency Inservice Training Exam -- RITE Exam Review
anatomy
Upper extremity muscle function and innervation 04
Question ID: 081808103
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 11/09/2008
Modified: 11/09/2008
Estimated Permutations: 151200