The<unk>  rotates the head of the humerus medially (internal rotation) and adducts it; when the arm is raised, it draws the humerus forward and downward. It is a powerful defense to the front of the shoulder-joint, preventing displacement of the head of the humerus.
Subscapularis muscle
Latissimus dorsi muscle
Deltoid muscle
Inferior oblique muscle
Superior oblique muscle
Levator palpebrae superioris muscle
Morcellator
Pectus