The inferior angle of the scapula to lesser tubercle of humerus.
Posterior aspect of the inferior angle of the scapula.
Medial lip of the intertubercular sulcus of the humerus.
The teres major attaches to the medial lip of the intertubercular sulcus, which is a groove separating the greater and lesser tubercles of the humerus.
Extends arm at shoulder.
Adduct the humerus, internal rotation (medial rotation) of the humerus, extend the humerus from flexed position, protracts scapula, and depresses the shoulder.
Innervation – Nerve control
Lower subscapular nerve.
The lower subscapular nerve (alternatively, inferior subscapular nerve) is a nerve that supplies the lower part of the subscapularis muscle, and also supplies the teres major muscle. Wiki
Subscapular and circumflex scapular arteries.
The teres major uses the subscapular artery which originates from the medial surface of the third-part of the axillary artery.
The Teres Major’s antagonist muscles are the Infraspinatus, Teres Minor, and the Deltoid (posterior fibers).
Pictures of muscles
Trigger Point Referrals