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Multiple Choice
Which of the following is NOT one of the rotator cuff muscles?
A
Supraspinatus
B
Infraspinatus
C
Subscapularis
D
Teres Major
Verified step by step guidance
1
Understand the anatomy of the rotator cuff, which is a group of muscles and their tendons that act to stabilize the shoulder.
Identify the four muscles that make up the rotator cuff: Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis.
Recognize that the Teres Major is not part of the rotator cuff. It is a separate muscle that assists in the movement of the shoulder but does not contribute to the rotator cuff's stabilizing function.
Review the functions of each rotator cuff muscle: Supraspinatus assists in abduction, Infraspinatus and Teres Minor are involved in external rotation, and Subscapularis aids in internal rotation.
Conclude that Teres Major, while important for shoulder movement, is not classified as a rotator cuff muscle, differentiating it from the other muscles listed.