This video explores the origin, insertion, innervation and functions of the teres minor muscle, one of the 4 rotator cuff muscles. Test yourself in our rotator cuff quiz at https://khub.me/435pc'>https://khub.me/435pc

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The teres minor is one of the four rotator cuff muscles, the others being the supraspinatus, infraspinatus and subscapularis muscles. This shoulder muscle extends from the lateral border of the scapula to the greater tubercle of the humerus, where it is mainly involved in the external rotation of the arm, as well as the retroversion and adduction. The teres minor is innervated by the axillary nerve from the posterior cord of the brachial plexus.

In this muscle facts tutorial, we will go over the origin, insertion, innervation and function to put this muscle into the context of the other muscles of the shoulder.

0:12 introduction
0:32 teres minor origin and insertion
0:51 innervation by the axillary nerve
1:08 functions of the rotator cuff
1:35 functions of the teres minor

Mnemonic for memorizing the functions of the teres minor and major muscles: The teres major performs the actions of a major muscles (latissimus dorsi), and the teres minor performs the actions of a minor muscle (infraspinatus).

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Read more on the movements and muscles of the upper extremity in our free article, in order to get a solid understanding about the way our arms work in terms of actions and movements: https://khub.me/9ohix

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