Definition
Teres muscle refers to two muscles located in the shoulder region: teres major and teres minor. They both originate from the scapula and insert on the humerus. Think of these muscles as being similar to a helpful duo working together. One assists with internal arm rotation (teres major), and the other helps with external rotation (teres minor). 🔄 They both contribute to the functionality of the shoulder joint. Teres muscles play crucial roles in arm movement and stability.