FIG. 448. 



Posterior Humeral Head of TRICEPS. 



-Scapular Head of TRICEPS. 

 'Olecranon Process. 



-Outer Humeral Head of TRICEPS. 



-ANCONEUS. 



Greater Sigmoid Cavity. - 



Coronoid Process of Ulna.- 



SUPINATOR BREVIS on External Surface.-- 



' 



-EXTENSOR CARPI ULNARIS. 

 -EXTENSOR INDICIS. 



- Tuberosity of Radius. 



PRONATOR TERES o?i Anterior Border.- 



Radius. 



SUPINATOR LONOUS 



Groove for Tendon of EXTENSOR ossis 



METACARPI POLLICIS. 

 For EXTENSORES CARPI RADIALIS 



LONQIOR and BREVIOR. 

 For EXTENSOR COMMUNIS D1QITORUM. 





"EXTENSOR OSSIS METACARPI POLLICIS. 



Ulna. 



-Head. 



-Styloid Process. 



For Tendons of EXTENSOR INOICIS. 

 RADIUS AND ULNA IN PRONATION, OUTER ASPECT. 



