Back muscles, illustration. Superficial muscles of the back. On the upper right is trapezius with latissimus dorsi below extending to the pelvis. Covering the shoulder is the deltoid. To the upper left from the neck is splenius capitis with rhomboid minor and major attached to the scapula. Below these is the vertically oriented thoracolumbar fascia then the serratus posterior inferior muscle. From Lizars, J. 1823 A system of anatomical plates of the human body. W. H.Lizars, Edinburgh.