MUSCLES OF THE THIGH. 



381 



Fig. 100.* 



Use. To stretch the membranous 

 fascia, to assist in the adduction of 

 the thigh, and somewhat in its rota- 

 tion inwards. 



On the inside are, 



1 . Sartorius, 



Arises, tendinous, from the anterior 

 superior spinous process of the os ilium, 

 soon grows fleshy, runs down for some 

 space upon the rectus, and going oblique- 

 ly inwards, it passes over the vastus in- 

 ternus, and, about the middle of the os 

 femoris, over part of the triceps ; it 

 runs down farther between the tendon 

 of the adductor magnus and that of the 

 gracilis muscles. 



Inserted, by a broad and thin ten- 

 don, into the inner side of the tibia, 

 near the inferior part of its tubercle. 



Use. To bend the leg obliquely in- 

 wards, or to bring one leg across the 

 other. 



2. Gracilis, 



Arises, by a thin tendon, from the os pubis, near the symphy- 

 sis of these two bones, soon grows fleshy, and, descending by 

 the inside of the thigh, is 



Inserted, tendinous, into the tibia under the sartorius. 



Use. To assist the sartorius. 



Before are, 



* The muscles of the anterior femoral region. 1. The crest of the ilium. 

 2. Its anterior superior spinous process. 3. The gluteus medius. 4. The ten- 

 sor vaginoe femoris ; its insertion into the fascia lata is shown inferiorly. 5, 

 The sartorius. 6. The rectus. 7. The vastus externus. 8. The vastus inter- 

 nus. 9. The patella. 10. The iliacus internus. 11. The psoas magnus. 

 12. The pectineus. 13. The adductor longus. 14. Part of the adductor mag- 

 nus. 15. The gracilis. 



