'// 'IH! / 7 AND LEG. 



325 



externus, vastus intcriuis, and crureus make up tlio 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 

 temoris 



Rectus femoris 



Latlssimus dorsi 



CREST OF ILIUM 



DESCENDING RAMUS 

 OF PUBES 

 GraoillB 



SUPERIOR CLUTEAL 

 RIDGE 



Glutens 



maximus 



- POSTERIOR 

 SUPERIOR 

 ILIAC SPINE 



PyriformiB 

 POSTERIOR 

 INFERIOR 

 ILIAC SPINE 



GREATER SCIATIC 

 (ILIO-SCIATIC) NOTCH 



SPINE OF ISGHIUM 

 Gemellus superior 



LESSER SCIATIC NOTCH 

 Gemellus Inferior 



OBTURATOR NOTCH 

 Semimembranosus 



Quadratus femoris 



SerattendinosuB 

 and biceps 



Adductor maanus 



RAMUS OF ISCHIUM Obturator externus 



FIG. 226. THE LEFT HIP HONK. (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 



