92 



THE MUSCLES. 



Fk 



92. M. exfeiiwr (Viyiti 11 proprUiH loiujus (Fig-. 79 cl, ci'). 



Dugès, cubito-radio-sous-phalangien de l'index, n. 96. 



This muscle lies obliquely on the Lack of the hand, parallel 



with the ;//. ahdia-ivr digifl II. It 

 arises by two heads, one from the 

 tendon of the flexor aullbr. lai. 

 Huperf. (n. 60) upon the hinder ex- 

 tremity of the radio-ulnar. This 

 tendon conceals the hinder end of 

 this bone by means of a patella-like 

 thickening", and sends forth three 

 tendinous prolongations ; of these, 

 the one is attached to the ulnar 

 border of the radio-iilnar, the second 

 to the OS naviculare , while the third 

 constitutes that portion of the ;//. 

 extens. dig. II propria^ lony. which 

 is under consideration. The second 

 head arises from the os pyramidale 

 in connection with the exiensor digi- 

 torum coiiiiiuiniis hrevu (n. 90). The 

 heads unite to form a long muscle, 





brevis. 

 M. extensor carpi ulnaris. 

 M. flexor antibr. lat. superficial. 



MM. interossei. 



Muscles of hand of liana escuhiita. Doreal 

 view, twice natural size. 



1/6.2. M. abductor dig. II longiis. 

 «6.2' M. abductor dig. II brevis. 

 adz M. adductor dig. II. 



'^, I M. extensor dig. II longus. 



('2 ) 



'•4 ^^^brevis"^"' digitorum conununis ^hich ruus oblifjuely towards the 

 'L M. extensor dig. II proprius «^^'ond finger, passcs iuto a tendon, 



which, after forming connections 

 by some muscular fibres with the 

 metacarpal, is inserted into the ter- 

 m's ' . „. minal phalanx. 



II-V as ni tig. 77. ^ 



83. 31. extensor dig. II proprius brevis (Fig. 79 ehi). 



Dugès, su.s-luuo-phalangettien de l'index, n. 120. 



This muscle lies between the preceding muscle and the abductor 

 dig. II longus. It arises from the 0^ naviculare, and also includes 

 some fibres which arise from the second metacarpal. The tendon 

 runs along the radial side and is inserted along with the last 

 muscle into the terminal phalanx. 



94. 3[. abductor dig. II brevis (Fig. 79 ab.z'). 

 Dugès, .su.s-luno-nictacarpien de l'index, n. 8S. 



This represents the atjduct. pollic. brevis of man, lies on the outer 

 side of the hand, arises from the os naviculare, and is inserted into 

 the second metacarpal. 



