MUSCLES OF THE BACK OF THE TRUNK. 477 
‘ig. 226—-MuscLes oF THE Back oF THE TRUNK, THE SUPERFICIAL LAYER BEING 
‘ SHOWN ON THE LEFT SIDE, THE MivpLE LAYER ON THE RIGHT. 
. Trapezius; 2, occipital bone; 3, spine of the scapula; 4, acromion process; 
5, deitoid; 6, infraspinatus; 7, teres minor; $, teres major; 9, latissimus dorsi; 
10, its aponeurosis; 11, gluteus magnus; 12, space between thé latissimus dorsi 
and external oblique; 13, rhomboideus major; 14, splenius; [5, angularis scapule; 
16, rhomboideus minor; 17, external oblique; 18, supraspinatus; 19, serratus 
Magnus; 22, inferior serratus minor; 23, internal ob'ique; 24, crest of the iliac 
bone; 25, gluteus medius; 26, pyramidalis; 27, gemellus superior; 28, obturator 
internus; 29, gemellus inferior; 30, quadratus femoris; 31, semi-membranosus ; 
_ 32, tuberosity of the ischium ; 33, insertion of the gluteus maximus; 38, long 
of the triceps extensor of the arm. 
