THE ABDOMEN. 



133 



The deepest of the abdominal muscles is the trans- 

 versalis, which rises from the outer third of Poupart's 

 ligament and the adjoining part of the crest of the 

 ilium, from the six lower costal cartilages, and by a 



FIG. 51. Muscles of the trunk from before (left side, superficial; and right 

 side, deep): 1, Pectoralis major; 2, deltoid; 3, portion of latissimus dorsi; 4, 

 serratus magnus; 5, subclavius; 6, the pectoralis, sternocostal portion; 7, serratus 

 magnus; 12, rectus abdominis; 13, internal oblique; 14, external oblique; 15, 

 abdominal aponeurosis and tendinous intersections of rectus abdominis; 16, over 

 symphysis pubis; 17, linea semilunaris; 18, gluteus medius; 19, tensor vaginse 

 femqris; 20, rectus- femoris; 21, sartorius; 22, femoral part of iliopsoas; 23, 

 pectineus; 24, adductor longus; 25, gracilis. (Borland's Dictionary.) 



broad aponeurosis, the lumbar fascia, from the lumbar 

 vertebrae. It is inserted into the pubic crest and by 

 aponeurosis into the linea alba. There is one of these 

 muscles on either side. 



The rectus abdominis is also really two muscles and 



