I340 



HUMAN ANATOMY. 



and first, second and third sacral nerves. Leaving the pelvis through the greater 

 sacro-sciatic foramen below the pyriformis, and passing through the gluteal region 

 and upper part of the thigh as the inner portion of the great sciatic nerve, it becomes 

 an independent trunk at the point of bifurcation of the sciatic. Emerging from 

 beneath the hamstring muscles and descending vertically through the middle of the 



Fig. iii8. 



Musculo-cutaneous nerve 



Fibula 



Extensor longus 

 digitoruni tendon 



Peroneus tertins tendon 



Anterior tibial nerve 

 Articular branches to ankle joint 



Peroneus longus tendon 



External saphenous nerve 



Musculo cutaneous nerve — 



external division 



External division of anterior 



tibial nerve 



Extensor brevis digitorum 



Metatarsal branches of external 

 division of anterior tibial nerve 



External saphenous nerve 



Digital branches of external 

 division of musculo- 

 cutaneous nerve 



.Extensor proprius 

 hallucis tendon 



Internal saphenous nerve 



Tibialis anticus tendon 



Extensor brevis digitorum 



Internal divisioo 

 of musculo- 

 cutaneous nerve 

 Anterior tibial 

 - nerve — internal 

 branch 



Dissection oi dorsum of right foot, showing distribution of anterior tibial, musculo-cutaneous, and internal and 



external saphenous nerves. 



popliteal space, it gradually attains the inner side of the popliteal vessels, crossing 

 them superficially from without inward. In the lower part of the space the nerve 

 lies posterior to the popliteus muscle and anterior to the plantaris and the gastroc- 

 nemius. At the lower border of the popliteus muscle the internal popliteal becomes 

 the posterior tibial nerve (Fig. 1119). 



