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Anatomy
After the orthopedic surgeon examined the MRI of the shoulder of a 42-year-old female he informed her that the supraspinatus muscle was injured and needed to be repaired surgically. Which of the following is true of the supraspinatus muscle?
It inserts on the lesser tubercle of the humerus.
It initiates adduction of the shoulder.
It is innervated chiefly by the C5 spinal nerve.
It is supplied by the upper subscapular nerve.
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