Peritoneum. 



367. View of the Anterior Abdominal Wall, from 



inside. 



On the inner surface of the anterior abdominal wall are five 

 folds of the peritoneum, which are caused by connective tissue bands 

 running behind the peritoneum. The middle one of these folds is called Liga- 

 mentum vesico-umbilicale medium, and contains the remains of the u r a c h u s, 

 which forms a tubular communication between the urinary bladder and 

 allantoic vesicle ; the folds on both sides of it are called Ligamenta vesico- 

 umUlicalia latercdia and these contain the obliterated remains of the hypo- 

 gastric arteries; the folds on both sides of these are formed by the 

 Vasa epigastrica. The fossae existing between these folds are called 

 inguinal fossae: internal, middle, external. In the external inguinal 

 fossa a small foveola, Foveola inguinalis, is seen, or in its place may be 

 only a whitish cicatrix: place of the obliterated Processus vaginalis 

 (abdominal opening of the inguinal canal). 



