80 ANATOMY AND PHYSIOLOGY. 



Tibialis anticus arises from the upper and fore part of the tibia. 

 Inserted into the os cuneiform internum. Use To bend the foot. 



Tibialis posticus arises from the back part of the tibia, interos- 

 seous ligament, and adjacent part of the fibula. Inserted into the 

 middle cuneiform bone, and upper part of the os nayiculare. Use 

 To move the foot inwards. 



Peroneus longus arises from the head of the tibia, and upper and 

 outer part of the fibula. Inserted into the metatarsal bone of the 

 great toe. Use To move the foot outwards. 



Peroneus brevis arises from the outer and fore part of the fibula. 

 Inserted into the metatarsal bone of the little toe. Use To assist 

 the peroneus longus. 



Extensor longus digitorum pedis arises from the upper part of the 

 tibia, interosseous ligament, and inner edge of the fibula. Inserted 

 into the first joint of the smaller toes by four tendons. Use To 

 extend the toes, and separate them from one another. 



Extensor proprius pollicis pedis arises from the upper and fore 

 part of the tibia. Inserted into the convex surface of the bones of 

 the great toe. Use To extend the great toe. 



Flexor longus perforans arises from the upper and inner part of 

 the tibia. Inserted into the last bones of all the toes, except the 

 great toe, by four tendons. Use To bend the last joint of the 

 toes. 



Flexor longus pollicis pedis arises from a little below the head of 

 the fibula. Inserted into the last bone of the great toe. Use To 

 bend the great toe. 



MUSCLES CHIEFLY SITUATED ON THE FOOT. 



Extensor brevis digitorum pedis arises from the upper and anterior 

 part of the os calcis. Inserted into the first bone of the great and 

 other toes, except the little. Use To extend the toes. 



Flexor sublimis arises from the lower part of the os calcis. In- 

 serted into the second phalanx of each of the small toes, by four 

 tendons, which are perforated by those of the flex. long. dig. ped. 

 Use To bend the second joint of the toes. 



Lumbricales pedis arises from the tendons of the flexor longus 

 digitorum pedis. Inserted into the tendinous expansion at the 

 upper part of the toes. Use To draw the toes inwards. 



Flexor brevis pollicis pedis arises from the fore part of the os calcis, 

 and external cuneiform bone. Inserted into the first joint of the 



