MUSCLES OF THE TRUNK. 



213 



spread out in front, and collected behind, where they become slightly fibrous, 

 and unite with the tendon of the great psoas. 



Attachments. It has its fixed insertion on the whole of the iliac surface, 

 on the external angle of the ilium, the sacro-iliac ligament, and the ilio- 



Fig. 108. 



MUSCLES OF THE SLTBLUMBAR, PATELLAE, AND INTERNAL CRURAL REGIONS 



1, Psoas magnus 1', Its terminal tendon ; 2, Psoas parvus ; 3, Iliac psoas ; 4, Its 

 small internal portion ; 5, Muscle of the fascia lata ; 6, Anterior straight muscle 

 of the thigh ; 7, Vastus internus ; 8, Long adductor of the leg ; 9, Short adductor 

 of the leg ; 11, Pectineus; 12, Great adductor of the thigh; 12', Small adductor 

 of the thigh-, 13, Semimembranosis ; 14, Semitendinosis. A, Portion of the 

 fascia iliaca ; B, Portion of the membrane reflected from the aponeurosis of the 

 abdominal great oblique muscle, forming the crural arch (Poupart's ligament); 

 C, Pubic tendon of the abdominal muscles; D, Origin of the pubio-femoral 

 ligament. 



pectineal crest. Its movable insertion is into the small internal trochanter, 

 in common with the great psoas. 



Relations. Above, with the ilium ; below, with the iliac fascia and the 

 long adductor of the leg ; outwardly, with the muscle of the fascia lata and 



