118 



THE MUSCLES. 



Fig. 94. 



F.t. 



Dorsal view of muscles of foot of Rana esculenta. 



a.b.i M. abductor brevis dig. I. 

 e.b.i M. extensor brevis dig. I. 

 e.b.2 M. extensor brevis dig. II. 

 e.b.3 M. extensor brevis dig. III. 

 c.6.4 M. extensor brevis i dig. IV. 

 .6.4'M. extensor brevis 2 dig. IV. 

 c.6.5 M. extensor brevis dig. V. 

 e.l.i M. extensor longus dig. I. 

 e.1.2 M. extensor longus dig. II. 

 e.1.3 M. extensor longus dig. III. 

 (.1.4 M. extensor longus dig. IV. 

 e.t.s M. extensor longus dig. V. 

 F.t M. flexor tarsi posterior. 

 1.2 to i.io MM. interossei. 



hinder extremity of the 

 astragalus, and by fleshy 

 fibres from the hinder 

 extremity of the fourth 

 metatarsal ; it is inserted 

 by a thin tendon into 

 the inner surface of the 

 second phalanx of the 

 same toe. 



(8) The eighth w. In- 

 terosseus (^.8) takes its 

 origin from the outer 

 surface of the fourth 

 metatarsal and from the 

 inner surface of the fifth : 

 it is inserted into the 

 hinder extremity of the 

 second phalanx. 



Fifth toe. 



(9) The ninth m. iu- 

 terossem (^.9) arises from 

 the inner surface of the 

 fifth metatarsal, and is 

 inserted into the hinder 

 (extremity of the second 

 phalanx. 



(10) The tenth m. in- 

 /erowens has already been 

 described as the abductor 

 digiti V brevis (Fig. 94 



!.IO). 



If we take the 

 fourth toe as the axis 

 of movement, the first, 

 third, fifth, seventh, 

 eighth, and tenth mm. 



O * 



interossei will abduct 

 from an imaginary line 

 which runs through this 

 toe. The second, fourth, 



