THE INTERNAL FEMORAL REGION 229 



Origin, short tendon from the body of the pubis below the crest 

 and near the angle; insertion, inner lip of the linea aspera, 

 united to the vastus internus in front and adductor magnus 

 behind. 



3. M. Gracilis, or adductor gracilis. Origin, inner margin 

 of pubic bone and whole length of its inferior ramus, thin 

 and flat, then narrow and thicker. A round tendon in the 

 lower third of the thigh, curving forward below, inserted into 

 the inner side of the tibia just above the semitendinosus, and 

 covered by the sartorius. 



M. Adductor Brevis. Origin, body and inferior ramus of 

 the pubis below the adductor longus, between the gracilis 

 and obturator externus; insertion, into the whole line from the 

 small trochanter to the linea aspera behind the pectineus. 

 It lies between the adductor magnus and longus. 



1. M. Adductor Femoris Minimus. This is what is described 

 with the adductor magnus, usually as its anterior and superior 

 portion. Origin, body of the pubis and ischiopubic rami; 

 insertion, femur, in a line from the quadratus femoris to the 

 upper end of the linea aspera, and a short distance along it. 



2. M. Adductor Magnus. Origin, ischial ramus internal 

 to the above muscle and outer half of the triangular space 

 on the posteroinferior surface of the tuber ischii; fibers pass 

 in two layers, one to the inner lip of the linea aspera, and the 

 line extending from the great trochanter to the linea aspera, and 

 the other on the inner side of the opening for the femoral vessels 

 by a distinct rounded tendon to insert on the adductor tubercle 

 on the inner condyle of the femur. The femoral attachment 

 is interrupted by three or four tendinous arches for the per- 

 forating arteries. 



Adductor longus may extend to knee, inseparable from the 

 adductor magnus. 



Adductor brevis may consist of two or three parts. 



Adductor magnus, condylar part may be distinct; usual in 

 apes. 



Nerves. Adductors by the obturator nerve, but adductor 

 magnus also by the great sciatic; pectineus regularly by a 

 branch from the anterior crural, an offset from the obturator 

 and accessory obturator nerve, only occasionally present. 



Actions. All adduct the thigh. Pectineus, adductor longus 

 and brevis flex the hip, while part of adductor magnus from 



