LATISSIMUS DORSI. 



201 



Fig. 170. SUPERFICIAL VIEW OP 

 THE MUSCLES OP THE TRUNK, 

 SHOULDER AND HIP (after Bour- 

 gery). i- 



o, occipital protuberance; C, 

 transverse process of the atlas ; D, 

 first dorsal vertebra ; L, first lum- 

 bar vertebra ; S, upper piece of the 

 sacrum ; Co, first piece of the 

 coccyx ; a, acromion ; 6, base of 

 the scapula ; i, crest of the ilium ; 



1, upper and back part of the sterno- 

 mastoid muscle, spreading from the 

 mastoid process to the superior 

 curved line of the occipital bone ; 



2, splenius, levator anguli scapulae, 

 and other deep muscles ; 3, 3', upper 

 and lower ends of the trapezius 

 muscle; 3', triangular tendon at- 

 tached to the base of the spine of 

 the scapula ; +., half of the oval 

 tendon belonging to the two trape- 

 zius muscles in the lower cer- 

 vical and upper dorsal region ; 

 4, 4, latissimus dorsi ; 4', 4", 

 line along which the latissimus 

 dorsi takes origin from the lumbar 

 fascia ; 5, infraspiuatus ; 6, teres 

 minor ; 7, teres major ; 8, middle 

 or acromial part of the deltoid ; 

 9, hinder part of the external 

 oblique muscle of the abdomen ; 10, 

 glutens medius, covered by the 

 aponeurosis of the fascia lata; 11, 

 11, line of origin of the gluteus 

 maximus from the posterior part of 

 the ilium to the coccyx ; 11' its inser- 

 tion into the fascia lata over the 

 trochanter major ; 11 ", a part of its 

 insertion into the femur ; 12, 

 biceps ; 13, semitendinosus ; 14, 

 adductor magrius ; 15, gracilis. 



The latissimus dorsi is super- 

 ficial, except at its origin from the 

 dorsal vertebrae, where it is covered 

 by the trapezius, and at its inser- 

 tion, where it dips into the axilla. 

 It rests on part of the rhomboideus 

 major and infraspinatus, on the 

 teres major, serratus posticus in- 

 ferior, vertebral aponeurosis, ex- 

 ternal intercostal muscles, and the 

 posterior borders of the external 

 and internal oblique muscles. 



Between the adjacent borders of 

 the latissimus dorsi, trapezius, and 

 rhomboideus major, there is left, 

 when, the scapula is drawn for- 

 ward, a triangular area, in which 

 a portion of one or two ribs and 

 an intercostal space becomes super- 

 ficial ; this is taken advantage of 

 for the purpose of auscultation. 



Fig. 170. 



