ELEMENTARY ANATOMY. 



[LESS. 



Muscles named obturator internns and obturator externus 

 spring respectively from the inner and outer surfaces of the 

 obturator membrane and ischium, and are inserted into the 

 trochanteric fossa. Two little muscles (gemelli) arising re- 

 spectively from the spine and tuberosity of the ischium, join 

 the tendon of the internal obturator above and below. 



The quadratus femoris passes from the tuberosity of the 

 ischium to the great trochanter and to the surface of the 

 femur immediately below it. 



FIG. 278. ANTERIOR MUSCLES OF THE RIGHT THIGH. 



i, psoas magnus; 2, iliacus ; 3, tensor vaginae femoris; 4, gluteus medius : s t 

 sartorius ; 6, rectus femoris ; 7, vastus externus ; 8, vastus internus ; 9, points 

 to the junction of the extensor muscles near their insertion into the patella ; 

 10, aponeurosis of the knee ; n, pectineus ; 12, adductor ; 13, gracilis. 



A muscle called the tensor vagina femoris passes obliquely 

 from the anterior, superior spinous process of the ilium to 

 the membrane which binds down the muscles of the thigh 

 on the outside. 



