202 



MUSCLES OF THE UPPER LIMB. 



The number of dorsal vertebra to which the latissimus dorsi is attached varies from 

 four to seven or eight, and the number of the costal attachments is also inconstant. A 



muscular band is sometimes seen 

 to stretch from this muscle across 



Fig. 171. the axilla to its anterior part, 



where it terminates variously, in 

 the tendon of the greater pectoral, 

 in the coraco-brachialis muscle, or 

 in the fascia. 



Fig. 171. DEEPER VIEW OF THE 

 MUSCLES OF THE TRUNK, 

 SHOULDER AND HIP (after Bour- 



The trapezius, latissimus dorsi, 

 deltoid, gluteus maximus and ex- 

 ternal oblique muscles have been 

 removed. The bones are lettered 

 as in the preceding figure. 



1, splenius capitis and splenius 

 colli ; ]', its lower end; 2, upper 

 part of the com plexus near its in- 

 sertion ; 3, levator anguli scapulse ; 

 4, rhomboideus minor ; above it + , 

 a part of the serratus posticus supe- 

 rior ; 5, rhomboideus major ; 6, 

 part of the longissimus dorsi ; 6', 

 part of the tendons of insertion of the 

 sacro-lumbalis ; 7, part of the spi- 

 nalis dorsi ; 8, upper, and 8', lower 

 part of the serratus posticus infe- 

 rior ; 9, obliquus abdominis inter- 

 nus ; 10, supraspinatus ; 11, infra- 

 spinatus ; 12, placed upon the long 

 head of the triceps, points to the 

 teres minor; 13, teres major; 14, 

 serratus magnus ; 15, gluteus 

 medius ; 16, pyriformis; 17, portion 

 of the obturator internus; +and+, 

 superior and inferior gemelli ; 17', 

 the pelvic portion of obturator in- 

 ternus ; 1 8, the tendon of the obtu- 

 rator externus passing to its inser- 

 tion; 19, quadratus femoris ; 20, 

 upper part of the adductor magnus. 



The rhomboidei muscles are 

 placed parallel to one another, 

 and are separated only by a 

 slight interval. They are ex- 

 tended obliquely from the 

 Bpinous processes of the lowest 

 cervical and some of the upper 

 dorsal vertebrae to the base of 

 the scapula. 



The rhomboideus minor, a 

 comparatively narrow muscle, 

 arises from the spinous pro- 

 cesses of the seventh cervical 

 and first dorsal vertebrae and from the ligamentum nuchae. It inclines 



