SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 253 



near the surface, having peculiar uses, and particularly 

 because its inner edge at the middle of the thigh is a 

 guide to the position of the great femoral artery that 

 lies between it and the thigh-bone. (See Fig. 182.) 



535. SOME MUSCLES OF THE THIGH, besides assisting 

 in moving it, bend the lower leg upon the thigh and 

 straighten it, or are flexors and extensors of the lower 

 leg. 



536. FOUR MUSCLES OF THE FRONT PART OF THE 

 THIGH unite their tendons below and connect with the 

 kneepan, from which a ligament extends fastening it to 

 the tibia (shin) at the upper part. (Fig. 2, PI. 23.) 



537. THE USE OF THE KNEEPAN (Patella) is to throw 

 its tendon out from the knee and allow the muscles to 

 act with increased advantage. A Bursa is placed below 

 the patella. 



538. THE LARGE MUSCLES ON THE BACK OF THE 

 LOWER LEG unite their lower tendons to form the heel' 

 cord (tendo Achilles), in which the fibres are, so to 

 speak, braided, to produce the strongest possible tendon. 

 (Fig. 2, PI. 22.) 



539. THE MUSCLES UPON THE FRONT PART OF THE 

 LOWER LEG, as the figures show, send down their tendons 

 to the top of the foot and outward to the toes, passing 

 under a ligament that extends from the outer to the 

 inner ankle, and binding down the tendons, between 

 which and it bursse are placed to prevent friction. 



540. THE LONG PERONEAL is situated in the outside 

 of the leg : its tendon extends down through a groove at 

 the back of the ankle, turns through another groove be- 

 neath the foot, which it crosses, and becomes inserted 

 into the bone back of the great toe (1st Metatarsal). 

 The grooves are lined with bursa3. It has the most 

 curiously arranged tendon in the Body. (Figs. 3, 4, 

 PI. 23.) 



585. What said of ? 536. What said of ? 537. What is ? 538. What said 

 of ? 539. What said of ? 540. What said of ? 



