114 



ANATOMY FOR NURSES 



[Chap. VII 



vertebral cartilages. It extends down and forward, then down 

 and backward, to its insertion in the small trochanter of the 

 femur. 



Iliacus. — This mnsele and its relation to the psoas magnus is 

 well shown in Fig. 83. It arises from the iliac fossa and is inserted 



Fig. 83. — P.so.\s, Iliacus, and Obturator Externus Muscles. (Gerri.sh.) 



partly into the tendon of the psoas and partly into the small 

 trochanter of the femur. 



Action. — The psoas magnus and iliacus act as one muscle to 

 flex the thigh on the pelvis, and rotate the femur outward. 



Glutei muscles. — The three gluteal muscles are coarse in tex- 

 ture, and form the chief prominence of the buttocks. 



