67 



Sartorius, a long narrow muscle crossing- the thig-h 

 obliquely from the outer to the inner side. It arises from the 

 iliac symphysis below the acetabulum and is inserted into the 

 inner side of the head of the tibia. 



The Adductor Magnus is a large muscle lying along the 

 inner border of the sartorius but passing beneath it at its distal 

 end. Its origin is from the pubic and ischial symphyses, and 

 the muscle passes under the sartorius to be inserted into the 

 distal third of the femur. 



The Adductor Longus is a long, thin, narrow muscle lying 

 along the outer side of the adductor magnus and often com- 

 pletely hidden by the sat tortus ; its origin is from the iliac 

 symphysis beneath the sartorius and unites a little way beyond 

 the middle of the thigh with the adductor magnus. 



The Rectus Internus Major or Gracilis, is a large muscle lying 

 along the inner side of the adductor magnus and of the sartorius. 

 Its origin is from the ischial symphysis and it is inserted into 

 the head of the tibia. 



The Rectus Internus Minor is a narrow, ribbon-like muscle 

 passing along the inner or flexor margin of the thigh ; it 

 arises from a tendinous expansion connected with the ischial 

 symphysis and is inserted into the inner side and just below 

 the head of the tibia. 



264. Dorsal Aspect of the Thigh. The Triceps Ex- 

 tensor Femoris is the great extensor muscle of the thigh ; it 

 arises by three distinct origins from the ilium and acetabulum 

 and is inserted into the tibia just below its head. 



The Rectus Anticus Femoris is the middle division of the 

 triceps ; it arises from the ventral border of the posterior third 

 of the ilium in front of the acetabulum ; about half way down 

 the thigh it joins the next division. 



The yastus Internus is the ventral head of the triceps and 

 lies between the sartorius and the rectus anticus. It arises from 

 the ventral and anterior border of the acetabulum. 



The yastus Externus is the dorsal head of the triceps. It 

 arises from the posterior edge of the dorsal crest of the ilium 

 and joins the other two divisions of the triceps at about the 

 junction of the middle and distal thirds of the thigh. 



The Gluteus lies in the thigh between the rectus anticus 



