30 



PLATE XV. 



MUSCLES 



A Triceps. 



B Anconeus. 



C The fascial expansion from the triceps 



covering the anconeus, cut and turned 



hack. 

 D Biceps. 



E Brachialis anticus. 

 F Supinator longus. 

 6 Extensor carpi raclialis longior. 

 H Extensor carpi radialis brevior. 



I Extensor communis digitorum. 



K Extensor minimi digiti. 



L Extensor carpi ulnaris. 



M Extensor ossis metacarpi pollicis. 



N Extensor primi internodii pollicis. 



Extensor secundi internodii pollicis. 



X Annular ligament. 



Y Placed on lower end of ulna. 



Z Placed on lower end of radius. 



VESSELS 



a Posterior terminal branch of superior 



profunda. 

 b Anterior interosseous,posterior terminal 



branch. 



c Termination of the posterior inter- 

 osseous (rather larger than usual). 



1 Radial. 



NERVES 



I 2 Dorsal branch of ulnar. 



The extensor minimi digiti can only be said to arise from the external condyle by 

 virtue of its origin from the intermuscular septum between the extensor communis and 

 extensor carpi ulnaris which is attached there. 



