THE OF nil i I'i'i R j 



i. ..'. 



■ 



D.] 



THE MUSCLES OF THE UPPER EXTREMITY. 



The nn. i']"-' 1 " extremity arc < 



I. The muscles of the shoulder, which arise from the shoul lie, 



igh th< :i of tl and an into tl 



remity in the vicinity of the shoulder-joint. This group includes thi 

 spin nor, th' . and th< . 



II. 1 muscles of the upper arm. f which 

 in the upper arm. 1 ibdividcd into: (i) The I 



the mu 



11, ps brack ii, t: 



ip II, .m<l th 



III. rhe muscles of the forearm which the 

 in the forearm. A i their arrangement 



divis the mus : the fli the mu f the : 



mu» les of tl 



layers. 1 ial la; 



formed by th 



sublimit, and lb . Th< 



j ami us, tl t and tl 



:' the .' and 



the 



In the in ip the , I position. The remain- 



ing muscli r.sor 



torum . , b) a c 



oblique layer, formed by the a brevis; (c) a c 



straight layer, composed of the extensor po< rid the 



tV. The muscles of the hand, which extend between parts of the skeleton of 



the hand. These muscles subdivided into three groups: (i) The muscles of the thenar 



