236 



MUSCLES OF THE LOWER LIMB. 



ascending branches of the external circumflex artery. At its origin it lies 

 between the sartorius and anterior border of the gluteus medius muscles. 



Fig. 1S7. — Deep Dissectiox of the I\ruscLE3 op the Aedomex axd Pelvis. (A. T.) | 



a, t-welfth dorsal vertebra ; b, fifth luinl)ar vertebi-a ; e, transverse process of tlie first 

 lumbar vertebra ; 1, quadratus lumboriim luuscle; on tbe left side, its fibres of origin 

 from tlie ti-aiisverse processes of tlie lumbar vertebraj are shown by the removal of the 

 psoas muscles ; 2, phiced upon one of the intertransversales muscles of the left side ; 3, 

 the upper part of the psoas parvus, drawn somewhat to the outer side ; 3', the inser- 

 tion of its tendon into the brim of the pelvis ; 4, the upper part of the psoas magnus ; 

 4", one of the origins of the muscle ; 4, the insertion of the muscle into the lesser 

 trochanter of the femur ; 5, iliacus shown fully on the left side by the removal of the 

 psoas muscles ; [>', insertion of the iliacus muscle into a line below the ti-ochanter 

 minor ; 6, pyrifm-mis muscle of the left side rising within the pelvis from the sacrum ; 

 6', insertion of its tendon into the summit of the great trochanter ; 7, the obturator 

 e.xternus seen from before ou the left side ; + + , "the right and left crura of the 

 diaphragm on the front of the upper lumbar vertebra}. 



The sartorius muscle is very long, narrow, and ribbon-shaped, and 

 presents the hmgest librcs of all the muscles of the bod)^ : it arises by a 

 short tendon iVom the anterior superior sjiinous process of the ilium, 

 and from a small part of the anterior margin of that bone immediately 

 below, and, passing downwards and inwards across the front of the 

 thigh, is inserted by an expanded aponeurosis into the inner side of 

 the tibia, near to the tubercle, and for about an inch below it. 



