Teres minor is an antagonist of the_______________________?

The teres minor is primarily involved in shoulder stabilization and lateral rotation of the humerus, while the subscapularis is responsible for medial rotation of the humerus. These two muscles work in opposition to each other in their actions. The teres minor, as an antagonist, counteracts the actions of the subscapularis, which means that when the subscapularis contracts to medially rotate the arm, the teres minor acts to facilitate lateral rotation, effectively opposing that motion. Understanding the roles of these muscles helps clarify how they work together and against each other to manage shoulder movement and stability.

The other muscles listed either do not directly oppose the teres minor in their primary functions or are located in different muscle groups that perform distinct actions at the shoulder joint. The latissimus dorsi, biceps, and triceps have their own specific roles, contributing to different movements such as extension or flexion, rather than acting as antagonists to the functions provided by the teres minor and the subscapularis.