The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action?
A) to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction
B) to extend and medially rotate the humerus and to act as a synergist of the latissimus dorsi
C) to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally
D) to flex and adduct the humerus and to act as a synergist of the pectoralis major

Question

Quizplus · Accepted Answer

The supraspinatus muscle stabilizes the shoulder joint, helps prevent downward dislocation of the humerus, and assists in the abduction of the arm.

The Supraspinatus Is Named for Its Location on the Posterior