The Supraspinatus Is Named for Its Location on the Posterior

question 27

Multiple Choice

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?

• A) to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally
• B) to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi
• C) to flex and adduct the humerus and to act as a synergist of the pectoralis major
• D) to initiate abduction of the arm, to stabilize the shoulder joint and to help prevent downward dislocation of the humerus

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