THE INGUINAL REGION. 



177 



as suggested, in order to obtain a view of these structures 

 from the peritoneal surface. 



FIG. 26. 



Dissection of the lower part of the abdominal wall from within, the peritoneum 

 having been removed, a. External iliac artery, b. Epigastric artery, c. Bor- 

 der of the posterior part of the sheath of the rectns (fold of Douglas), d. Con- 

 joined tendon in the triangle of Hesselbach. e. Posterior surface of rectus. 

 /. Fascia transversalis. g. Vas deferens. h. Spermatic vessels, i. Obliterated 

 hypogastric artery. A. Lymphatics in crural rings. I. Internal abdominal ring. 

 (From WOOD, on Rupture.) 



The position of the internal abdominal ring is recog- 

 nized as a dimple-like depression in the peritoneum, in- 

 dicating the closure of its vaginal process. Below this 



