Pectoralis 

 Hajor 



Minor 



Lahss. 



Horii . 



ftecfcs Alidom. 



Olliquus 



FIG. 39. The antero-cxternal relations of the ribs and costal cartilages. The front and back walls of 

 the axilla have been in great part cut away, exposing the Serratus magnus as the inner wall. Observe 

 the front parts of the two upper ribs not covered by the muscle, arid Scalenus posticus passing deep 

 to it. 



