ABDOMINAL WALL 



From these origins the muscular fibres radiate, but the general 

 direction is from below upwards and medially. The posterior 

 fibres ascend, and are inserted into the lower borders of the 

 cartilages of the lower four ribs. These fibres occupy the 

 same plane as the internal intercostal muscles indeed, they 

 will be observed to be directly continuous with the fibres of 

 the internal intercostal muscles of the two lower spaces. 

 The lowest fibres, those springing from the inguinal ligament, 

 arch downwards and medially, and join with the lowest fibres 



Aponeurosis of internal oblique 

 Reflex inguinal ligament 



Internal oblique 



Inguinal 

 ligament 

 Falx aponeur- 

 otica inguinalis 

 Cord covered by 

 cremaster 

 Subcutaneous 

 inguinal ring 



Cord covered by 

 external sper- 

 matic fascia 



Fascia of Scarpa 



, : , 



FIG. 146. Dissection of the Inguinal Region. 

 The aponeurosis of the external oblique is turned down. 



of the transversalis in a flat tendon, called ihefalx inguinalis or 

 conjoined tendon, which is inserted into the pubic crest, and 

 into the pecten pubis, behind the lacunar ligament and the 

 reflex inguinal ligament, for fully half an inch of its extent 

 (Figs. 142 and 146). The intermediate fibres proceed upwards 

 and medially, and end in a strong aponeurosis, which extends 

 from the lower margin of the thorax to the pubis. By this 

 aponeurosis they gain insertion into the lower borders of the 

 cartilages of the seventh and eighth ribs and the xiphoid 

 process, and into the linea alba throughout its entire length. 

 The manner in which the aponeurosis reaches the middle 

 line requires special description. 

 125 c 



