: A 21 year old male is brought to the ED (Emergency Department) with a superficial knife wound crossing the rib cage in the region of the midaxillary line of the right side. When the attending physician asks him to "reach forward", he is unable to do so fully on the affected side. The physician also observed that the medial border of the young man's scapula is deviated posterolaterally; this deviation is accentuated when the patient attempts to reach forward.
What nerve has been damaged by the injury?
The long thoracic nerve
Which muscle is affected?
Serratus anterior
Name the visible clinical condition.
winged scapula
SAMPLE EXAM QUESTIONS:
1. A lesion of the lateral cord of the brachial plexus would manifest itself by which of the following functional deficits?
B. inability to extend the forearm
C. inability to abduct the digits
D. inability to extend the hand
E. inability to extend the arm
2. Which of the following muscles acts to abduct the upper extremity at the shoulder joint?
A. pectoralis major
B. subscapularis
C. teres major
D. triceps brachii
E. deltoid
3. The axillary artery:
A. begins at the outer border of the clavicle
B. terminates at the outer border of teres major
C. is continous with the subclavian artery proximally and the brachial artery distally
E. all of above are true
A. Deltoid
B. long Head of Triceps