THIGH AND LEG. 



325 



externus, vastus interims, and crureus make up the extensor musculature. Trace 

 these muscles to the following origins (from Morris) : 



The Rectus. Origin. Anterior head, from the front of the anterior inferior 

 spine of the ilium ; posterior head, from the upper surface of the rim of the 

 acetabulum just external to the attachment of the capsular ligament. 



Vastus Externus. Origin. (i) The upper half of the anterior intertro- 



Posterior limit of external oblique 



Insertion of 

 external oblique 



Internal oblique 



Tensor vaginas 

 t'emoris 



Rectus femoris 



ARTICULAR PORTION OF 

 COTYLOID CAVITY 



PECTINEAL RIDGE 



Fectineus 



Rectus 

 abdominis 

 Pyramidalis 

 Adductor 



longus 



Adductor 



brevis 



DESCENDING RAMUS 

 OF PUBES 



Graoilis 



Latissirnus dorsi 



CREST OF ILIUM 



SUPERIOR GLUTEAL 

 RIDGE 



OBTURATOR NOTCH 

 Semimembranosus 



Quadratus femoris 



Semitendinosus 

 and bicepa 



_ Adductor magnus 



RAMUS OF ISCHIUM Obturator externus 



FIG. 226. THE LEFT HIP-BONE. (Posterior view.) 

 (Trace out the origin and insertion of muscles and consult this figure.) 



chanteric line and the front of the upper part of the femur along the anterior border 

 of the great trochanter ; (2) a horizontal line, which forms the lower border of the 

 great trochanter ; (3) the outer lip of the gluteal ridge ; (4) the upper half of 

 the outer lip of the linea aspera and the adjacent portion of the shaft of the femur 

 for about one-sixth of an inch ; (5) the external intermuscular septum in the 

 neighbourhood of its attachment to the linea aspera. 



Vastus Interims. Origin. (i) The outer lip of the lower half of the linea 



