

UII Mi 5CLES 01 HI) 

 .pplied from the radial , I 



I ie extensor carpi ulnaris ulnar, rnu I 



'Pfrom tl ofthehumcru 



articular capsule ol the elbo* joint and qu antibrachiali 



adherent for almost half of its cntir. in relati- 



neusand I from the fl< 



In lna.1, i nt h, 



run .ah the dorsal carpal ligament, and in to the 



THE DEEP OBLIQUE GROUP OF EXTENSORS. 



I from the deep straight group by the fact that onl) 

 ompnsmg it 1 by the superficial rhe m 



i radiales in the 1 

 1 thcmu f the deep fl« , up , th, only th 



rh< abductor pollicis longus ext 



^ a flat strong muscle, the origin of which 



11 It has a lo. , m lhe 



ul ™ i the inter s membrane and from the 



***>" th r. In the lower third of tl I 



th. .llicis I the tendo! . d 



twotendoi huh, cneath the dorsal carnal 1 



f the metacarpal bone of the thumb I 

 radial tlar bone and to the al 



1 



Th< extensor pollicis brevis I 

 and is by far the >, muscle of the group. I- -,l,r n 1 imn 



■J of the abductor, and a. om the int. memb. 



the radius I the tendons of the . 



•mpartment as the abdi 

 aponei >1 the first phalanx of the thumb. 



THE DEEP STRAIGHT GROUP OF EXTENSORS. 



The muscles of this group lie immediately ... the ulna ,, bm they ar , 



deepty placed m the forearm and are completely cono 



1 he extensor pollicis longus I . -. thanthebreris.lt 



arises Iron, the dorsal surface of die ulna and from th embrane and form. 



