Origin: Infraspinous fossa of the Scapula
Insertion: Middle facet of greater tuberosity of the Humerus and capsule of the Glenohumeral Joint
Function: External rotation of the shoulder Along with other Muscles which produce shoulder External (lateral) Rotation
Nerve: Suprascapular Nerve
Artery: Suprascapular (transverse cervical) artery and the Circumflex scapular artery