HERNIA 



255 



at its medial end and weakest at its lateral end. At its 

 medial end, behind the subcutaneous inguinal ring, it is three 

 layers thick, the layers, from before backwards, being the lig. 

 inguinale reflexum, the falx inguinalis, and the transversalis 

 fascia. More laterally, opposite the region where the anterior 

 wall consists of external oblique aponeurosis alone, the 

 posterior wall is formed by the transversalis fascia and the 



Intestine!-- -l\~ 



Cavity of 

 processus vaginalis 



Cavity of .___ 

 processus vaginalis 



Cavity of_I_ 

 tunica vaginalis 



Testis' 

 Ductus deferens 



- Intestine 



r Ductus deferens 



Cavity of 

 processus vaginalis 



Cavity of tunica vag. 

 Testis 



Intestine 



Cavity of 

 processus vaginalis 



Cavity of tunica vag. 

 Ductus deferens 

 Testis 



FIG. 115. Diagram illustrating different forms of scrotal hernice. 



falx inguinalis, and still more laterally, where the anterior 

 wall is formed by both external oblique aponeurosis and 

 internal oblique muscle, the posterior wall is represented by 

 transversalis fascia only. The walls of the canal are well 

 adapted, therefore, to resist the effects of mtra-abdommal 

 pressure. The student must remember, however, that, for 

 practical purposes, in association with the formation of hernia, 

 the contents of the abdomen may be looked upon as being of 

 a fluid or semifluid nature ; consequently, if a portion of the 

 abdominal contents happens to slip through the abdominal 



