206 MYOLOGY. 



bodies of the last two dorsal, and all the lumbar vertebrae except 

 the last, and to the lumbar transverse processes, passing between 

 the two parts of the iliacus. 



Insertion. — By a tendon, common to it and the iliacus, to the 

 internal trochanter of the femur. 



Relation. — Posteriorly with the iliacus ; internally with the 

 psoas parvus and the bodies of the vertebrae; above with the 



Fia. 76. 

 Muscles of the sublumbar and internal deep femoral regions— seen from below, a, a. Quadratus 

 lumborum ; 6, Psoas parvus ; c, Psoas magnus ; d. e, Iliacus ; /, Pectineus ; g, Adductor brevis ; 

 h, Adductor longus ; i, Adductor magnus ; fc, Vastus internus : I, Kectus femorls. 



quadratus lumborum, and below with the kidney and iliac fascia, 

 the diaphragm, and, in the thoracic cavity, with the pleura. 



Action. — To flex and rotate the thigh, or, the latter being 

 fixed, to flex the loins ; the latter action tends to " roach " the 

 back,' 



PSOAS PARVUS. 



{Suhlumho-puhialis. ) 



(Fig. 76. 6.) 



Situated on the inner side of the psoas magnus, it is long, thin, 



and semipenniform, the fibres extending backwards and outwards. 



