It is related to the large dorsal, with the long head of the triceps, with the subscapularis and with the coracobrachialis muscle. The lower margin together with the large dorsal and the large round forms the posterior wall of the axillary cavity.
Its main action is to adduce, extend and intromerate the humerus; works in synergy with the dorsal gran muscle. Performs an important action in arm retroversion. Stabilizes the scapulohumeral articulation.
It is innervated by the inferior subscapular nerve (C5-C7).
| ORIGIN From the lower half of the lower corner of the dorsal face of the scapula |  |
| INSERTION S on the crest of the small tuberosity of the humerus | |
| ACTION It retracts the arm, adducts, extends and internally rotates the arm (humerus) | |
| INNERVATION LOWER SUBSECTOR NERVE (C5-C7) |
| Upper limb | Lower limb | Trunk | Abdomen | Articles |
