192 



Muscles of the Lower Extremity. 



258. The Internal Muscles oi the Hip. 



M. }>soas major s. magnus arises from the sides of the bodies and the 

 transverse processes of the XII. dorsal, and the four upper or all the lumbar 

 vertebrae and from the intervertebral substances; it is inserted into the lesser 

 trocbanter. (Rotates the thigh outwards and Hexes it.) 



M. iliacus internus arises from the inner lip of the crest of the ilium and 

 the whole of the iliac fossa, and is inserted into the tendon of the psoas magnus 

 muscle. (Rotates the thigh outwards and flexes it.) 



M. ]>so(is minor s. pawns arises from the last dorsal and first lumbar 

 A-ertebrae, and is inserted into the ileo-pectineal eminence and the iliac fascia. 

 (Tensor of the iliac fascia.) Not always present. 



M. coccyyeits (not illustrated) runs from the spine of the ischium along 

 the lesser sacro- sciatic ligament (Lig. spinoso-sacrumj to the coccyx. It is 

 usually only slightly developed. 



