The rotator cuff muscles are responsible for stabilizing the glenohumeral or shoulder joint, and allow us to move our arms in various ways. Learn more about the supraspinatus, infraspinatus, subscapularis, and teres minor in this video and explore them further in Complete Anatomy. | Complete Anatomy

Semispinalis capitis is a long paired muscle that belongs to the deep layer of muscles of the back. It forms the superior, and largest, component of the three-part semispinalis muscle. With semispinalis cervicis and semispinalis thoracis forming the middle and inferior divisions of the muscle, respectively. There is no lumbar spine division for the semispinalis muscle. Origin: Articular processes of vertebrae C4-C7, transverse processes of vertebrae T1-T6 Insertion: Between superior and inferior