475 



C. — Muscles of Ankle and Foot. 



1. If. gastrocnemius, ... .a, 7 '47 oz. 



: : : : I : : W- 



Origin ; on the outer side, from the back of the outer condyle, from 

 tendon of agitator caudce, and from under surface of one horn of the cres- 

 centic sesamoid bone lying below the outer condyle at the top of fibula; 

 on the inner side, from the back of the inner condyle. 



2. M. flexor communis perforaius, a, 6*85 oz. 



;: i\: 



Origin ; from the inner horn of the creseentic sesamoid bone, with 

 some fibres from the fascia of knee joint and outer condyle. 



Insertion ; at the calcaneum, the tendon is partly inserted on its 

 inner side, and then passes on over the calcaneum (representing the 

 flexor brevis digitorum), and is distributed (as flexor perforatus) to the 

 near ends of both phalanges of the two large toes ; at the outer side of 

 the heel it gives off a smaller tendon, which runs direct to the outer of 

 the large toes, and is joined near its base by a second tendon from the 

 main trunk ; both united form the flex, perforatus of that toe. It seems 

 to contain the solans, plantaris, and flexor digitorum brevis combined in 

 one. 



3. M. flexor communis perf or ans (longus), a, . . . . 2*61 oz. 



» ^ - b ' ' ' 1-24 oz. 



c, . . M2J 



arises from the upper two-thirds of back of tibia and fibula, except 

 portion covered by poplitceus; and is distributed to the ungual phalanges 

 of tbe four toes. 



4. M. peronceus longus, . . b, . . 0-201 n ,w 



. . c, . . 0-14J' ' U ' W0Z - 



takes origin from the top and upper half of the fibula, and from 

 the fascia covering the other two peroncei ; and after passing under the 

 foot in the usual manner, its tendon is inserted into the near ends of the 

 metatarsals of the two inner (small) toes. 



5. M. peronceus brevis, ... a, ..... . 0\39 oz. 



. . . b, . . 0-12" 



•"■-■„ . . . c, . . 0-09, 



Origin from the outer and upper third of fibula, and insertion into 

 outer side of distal end of metacarpal of outer toe, and base of its first 

 phalanx. 



6. 31. peronceus tertius, . . . b, 0*01 oz. 



This little muscle arises from the middle of the fibula, below the 



other peroncei, and is inserted by means of a long silky tendon into the 

 back of the outer and near end of the 1st phalanx of the 2nd toe 

 (small). 



||. . 0-11 oz. 



