x I 



MUSCLES ON THE FRONT OF THE LEG. 385 



sular ligament from being pinched. After the leg is bent, this 

 muscle serves to roll it inwards. 



Muscles situated on the Leg. 



These muscles may be arranged in the two general classes of flexors and ex- 

 tensors of the foot, and flexors and extensors of the toes ; but several of them, 

 viz. the tibialis and the peronei, produce effects which are different from 

 flexion or extension. For the accommodation of the student of anatomy, they 

 may be studied in the order of their position as they lie on the front, on the 

 outside, and on the back of the leg. 



Muscles on the Front of the Leg. 



1. Tibialis Anticus. 



Arises, tendinous and fleshy, from the middle of that process 

 of the tibia, to which the fibula is connected above ; then it 

 runs down fleshy on the outside of the tibia ; from which, and 

 the upper part of the interosseous ligament, it receives a num- 

 ber of distinct fleshy fibres ; near the extremity of the tibia, it 

 sends off a strong round tendon, which passes under part of the 

 ligamentum tarsi annulare near the malleolus internus. 



Inserted, tendinous, into the inside of the os cuneiforme 

 internum, and posterior end of the metatarsal bone that sustains 

 the great toe. 



Use. To bend the foot, by drawing it upwards, and, at the 

 same time, to turn the toes inwards. 



2. Extensor Proprius Pollicis Pedis, 



Arises, by an acute, tendinous, and fleshy beginning, some 

 way below the head and anterior part of the fibula, along 

 which it runs to near its lower extremity, connected to it by a 

 number of fleshy fibres, which descend obliquely towards a 

 tendon. 



Inserted, tendinous, into the posterior part of the first and last 

 joint of the great toe. 



Use. To extend the great toe. 

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