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Multiple Choice
Which muscle is not part of the rotator cuff?
A
Teres minor
B
Teres major
C
Infraspinatus
D
Supraspinatus
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. The rotator cuff includes four muscles: Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis.
Identify the muscles listed in the problem: Teres Minor, Teres Major, Infraspinatus, and Supraspinatus.
Recall that the Teres Major is not part of the rotator cuff. It is a muscle of the upper limb that helps in the movement of the shoulder but is not involved in the stabilization of the shoulder joint like the rotator cuff muscles.
Recognize that the Supraspinatus, Infraspinatus, and Teres Minor are indeed part of the rotator cuff, contributing to shoulder stability and movement.
Conclude that the muscle not part of the rotator cuff from the given options is the Teres Major.