DEFINITION – What does Teres Major mean?

One of the six scapulohumeral muscles, the Teres Major is a thick, semi-flat muscle positioned very close to the Teres Minor on the underside of the upper limb, between the shoulder and elbow. It starts just below the armpit and ends at the upper end of the humerus.

FUNCTION – Teres Major Muscle

Innervated by the lower subscapular nerve, Teres Major is a medial rotator that, together with latissimus dorsi, controls movement of the humerus and helps stabilize the scapula. Along with Teres Minor, this muscle forms a tunnel through which many crucial veins and arteries pass.