118 



THE SKELETON 



intci TupttHl l)y the musculo-spiral groove ; the lower half is termed the external 

 condylar ridge, and ali'urds atlaehiuent to the supinator longus and cxtcn-'^or carpi 

 radialis loiK/i'ir museles, and the external intermuscular septum. The ulnar or 

 internal border commences at the lesser tuberosity, as the inner lip of the l»ici])ital 

 groove, and extends downwards to the ulnar (internal) condyle. Near its centre 



Fk;. 125.— The Left Hr^ERUs with a Sppracondvloid Process and some Irkegular 

 MiscLE Attachments. (Auterior view.) 



LESSER TUBEROSITY 

 Subscapularis 



Capsular ligament 



Coraco-brachialis brevis 

 (Kotator humeri i 



BICIPITAL GROOVE 



Coraco-brachialis 



Third head of biceps 



Brachialis amicus 



Coraco-brachialis . 



SUPRACONOYLOID PROCESS 





rr. 



5_L'/.^; 



Ml 



• GREATER TUBEROSITY 

 Transverse humeral ligament 



Fourth head of biceps 



ROUGH SURFACE FOR deltoid 



— THE EXTERNAL CONDYLAR RIDGE 



Pronator radii teres 



Capsular ligament 



CORONUID FOSSA 



INTERNAL CONDVLE 

 Internal lateral ligament . 



PA DIAL DEPRESSION 



iV'r EXTERNAL CONDYLE 

 '- CAPITELLUM 



is a ridge for the insertion of the coraro-hrarhialis, and hdow tliis the foranieii for 

 the nutrient artery. 



The three ])onlers considered al)ove l)()und tliree surfaces. The external sur- 

 face lies between the anterior and radial borders. Near its middle is a rouo-h 

 impression for the insertion of ih^^ deltoid ; somewhat lower is the termination of 



