66 ANATOMY AND PHYSIOLOGY FOR NURSES 



The muscles of the abdomen are: The obliquus ex- 

 ternus; obliquus internus; transversalis ; rectus; pyramid- 

 alls, and quadratus lumborum. 



FlG. 35. Muscles of the trunk from in front (left side, superficial ; and 

 right side, deep): i, 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 vaginae femoris ; 20, rectus femoris ; 21, sar- 

 torius; 22, femoral part of iliopsoas ; 23, pectineus ; 24, adductor longus ; 

 25, gracilis. 



The external oblique arises from the eight inferior ribs ; 

 it is inserted into the anterior half of the iliac crest, and, 

 mingling with its fellow of the opposite side, it forms the 

 linea alba. It is connected above with the ensiform carti- 



