CEEMASTER MUSCLE. 



319 



the internal attachment, smallev and less constant, is by means of a 

 tendinous band to the spine and crest of the pubis, close to the inser- 

 tion of the internal obhque muscle. The superior fibres of the muscle 



Fig. 225. — Lateral View 

 OF THE Trunk, giving 

 a deep view op the 

 Serratus Magnus and 

 Transversalis Abdo- 

 minis Muscles. ''A. T.) i 



(The serratus magnus is 

 stretched out by the sca- 

 pula being drawn away 

 from the ribs, a, coracoid 

 process of tlie scapula ; h, 

 glenoid cavity ; c, lower 

 angle ; d, first dorsal ver- 

 tebra ; e, placed on the os 

 pubis, poiut" to the inser- 

 tion of Grimbernat's liga- 

 ment ; I, YI, XII, the first, 

 sixth, and twelfth ribs ; 

 L', first lumbar vertebra ; 

 1, upper portion of the 

 serratus magnus attached 

 to the first and second 

 ribs ; 2, second or middle 

 portion attached to the 

 second and third ribs ; 3, 

 lower or fan-shaped por- 

 tion attached to the ribs 

 from the fourth to the 

 ninth ; 4, the extei-nal in- 

 tercostal muscles ; 5, upper 

 costal origins of the trans- 

 versalis abdominis ; 6, 

 origins of the muscles from 

 the transverse processes 

 of the lumbar vertebra3 by 

 the lumbar aponeurosis ; 

 6', pai't rising from the 

 crest of the ilium ; 7, lower 

 portion rising from the 

 upper half of Poupart's 

 Ligament, and passing over 

 the internal inguinal aper- 

 ture ; 8, the sheath of the 

 rectus muscle opened in its 

 tipper part by removing 

 the aponeurosis of the ob- 

 lique muscles ; 9, the same 

 in its lower part left entire 

 at the place where the 

 tendons jiass entirely in 

 front of the rectus muscle ; 

 10, the interspinales muscles of the 

 pyi'iformis. 



Fig. 225. 



lumbar vertelriB ; 11, gluteus minimus ; 12, 



extend between those attachments in a series of successively longer 

 loops, descending in front of the spermatic cord, a few of them reaching 

 as low as the level of the testicle : the remaining fibres, the greatest 

 number of which descend from the outer attachment, and a few from 

 the inner, spread out inferiorly and are embedded in the substance of a 



