MUSCLES OE THE ANTEKIOR EXTREMITY. 



-85 



i\ 



59. M.jh'xor (Ugitoriim coiniauim (Fig-s. 75, 76, 77 Fd). 



Dugès, epitrochlo-sous-phalangettieu, n. 118. 



This muscle lies most internally, and corresponds to the m. flexor 

 d'tyitorum suhlimis of man. It arises in common with the foregoing- 

 muscle from the epicondylm medialis, and runs downwards to the 

 palm of the hand. At its entrance into this it diminishes and 

 passes into the flat aimneuro-ns pahnarl^. (See hand, B.) 



60. 21. flexor antihraclni medialls (Ecker), (Fig. 75 Fa). 



Dugès, epitrochio- sous-radial, n. 79. (Frequently described as the pro- 

 nator rotttndus, a description which cannot be retained, as the implied 

 movement does not occur in the frog. — Ecker.) 



This muscle lies deeply on the inner side of the forearm, covered 



by the flexores carjji ; it arises tendinously from the ejjicond///ns me- 



dialis and is inserted into the inner surface of the radial side of the 



radio-ulnar as far as the inferior articu^lar extremity. 



61. M. flexor aniihrachii laferalis -s/'- 

 perflcialis (Ecker), (Figs. 74, 75 Fa'). 



Dugès. premier ex-humero-radial, n. 76. 

 i^Usually described as supinator lonffiis, 

 this, for reasons similar to those in the 

 case of m. Jie.vor aiiiihrackii mediallx, 

 cannot be retained.) 



The situation of this muscle corresponds 

 with that of the -siipinafor longus of man ; 

 it lies to the outer side of the tendon of 

 the Til. sternoradkdh, and arises by two 

 heads, the one, above from the outer edg'e 

 of the humerus, the other deeper from the 

 epicondylvs laieralh. They unite and pass 

 into a tendon which, running- over the 

 lower articular extremity of the radio- 

 ulnar, is partly attached to the carpus and 

 partly connected with the tendon of the 

 m. extensor diglt'i II jjroprins longus. From 

 its position and insertion, this muscle 

 evidently flexes the forearm and extends 

 the hand. 



62. 31. flexor antibracJni laferalis prof II nd IIS (EicVev), (Fig. 75 Fa"). 



Dugès, epicondylo-sus-radial, n. 78 Klein, Jiexor antihrncliii. {Sa- 



pinat. hrevi» aott.) 



This muscle arises under cover of the foregoing, from the epicou- 

 di/lus lateralis of the outer surface of the humerus, it becomes 



iluscle.s of the riglit arm <if liana 

 escuknta, deep layer. 



cd Extensor digit, communis. 

 Fa Flexor antibraohii medialis. 

 Fa' Flexor antibraeliii lat. super 



ficialis. 

 Fa" Flexor antibr. lat. profundus. 

 Fc Flexor carpi radialis. 

 Fc' ï'iexor carpi ulnaris. 

 Fd Flexor digitorum communis. 



