258 



ABDOMEN 



of the thigh. In its descent it passes behind the inguinal 

 ligament, along the femoral canal of the femoral sheath. It 

 is consequently mainly the duty of the student who is engaged 

 in the dissection of the lower limb, and within whose domain 

 the femoral sheath lies, to investigate the anatomical con- 

 nections of this variety of hernia (Vol. I. p. 243). Still, it is 

 essential that the dissector of the abdomen should examine, 



Transversalis fascia 

 r Transversus abdominis 



'Internal oblique 



External oblique 



Skin 

 Camper's fascia 



Superficial epi- 

 gastric vein 



Aponeurosis of external 

 oblique 



Scarpa's fascia * 

 Inguinal ligament 

 Transversalis fascia 

 Cribriform fascia 



Fascia lata 



Great saphenous vein 



Inguinal cana 



Transversalis fascia 



Inguinal ligament 



Ilio-psoas 

 External iliac vein 

 Iliac fascia 

 Femoral vein 



FIG. 1 1 6. Diagram of a Sagittal Section through the lower part of the 

 Anterior Wall of the Abdomen in the region of the Inguinal Canal. 



from its abdominal aspect, the femoral ring, or aperture of 

 communication between the femoral canal and the abdominal 

 cavity, and give the dissector of the lower limb an oppor- 

 tunity of doing so likewise. 



The femoral ring is placed immediately below the inguinal 

 ligament, in the interval between the external iliac vein and 

 the base of the lacunar ligament (Gimbernati) and therefore 

 below the inguinal canal. If the peritoneum is still in position 

 at that point it may exhibit a slight dimpling or depression 

 as it passes over the ring. Strip the peritoneum from the 

 greater part of the iliac fossa. The extra-peritoneal fatty 



