

THE UKINAKY BLADDER. 



Urinary bladder Umbilical artery 



1281 



Testis 



Epididymis 



Gubernaculum 



and the ductus deferens, 

 which lie on the lateral 

 wall of the pelvis, come 

 into direct relationship 

 with the lateral aspect of 

 the distended bladder. 



Posteriorly the peri- 

 toneum leaves the superior 

 surface of the empty 

 bladder at its posterior 

 border, and is carried back- 

 wards, forming a kind of 

 horizontal shelf, or fold, 

 for a distance of about 

 half an inch, giving at 

 the same time a partial 

 covering to the ductus de- 

 ferentes and superior ends 

 of the seminal vesicles. 

 The peritoneum then sud- 

 denly dips downwards to 

 reach the bottom of the recto-vesical, or recto-genital, pouch, where it is reflected 

 on to the anterior surface of the rectum (Fig. 1001). As a rule, no part of the 



Psoas major 

 Rectum 



FIG. 999. VIEW LOOKING FROM ABOVE INTO THE PELVIS AND LOWER 

 PART OF THE ABDOMINAL CAVITY IN A F(ETUS OF ABOUT THE 

 SEVENTH MONTH. 



On the left side, which represents a slightly more advanced condition than 

 the right, the testis has entered the inguinal canal ; on the right side 

 the testis is still within the abdominal cavity. 



Median umbilical ligament (urachus) 

 Plica vesicalis transversa 



Trigonum femorale 

 External | 



iliac vessels 



Urinary bladder 



, . Paravesical peritoneal fossa 



BQl^^tah^ Obliterated umbilical artery 



Inferior 

 >^ epigastric artery 



Internal spermatic artery 



Ductus deferens 



Recto-vesical pouch 

 Intervertebral fibro-cartilage 



Rectum 



Ureter 



External iliac artery 

 Hypogastric artery 

 Sacro-genital fold 

 FIG. 1000. VIEW LOOKING INTO THE MALE PELVIS FROM ABOVE AND SOMEWHAT BEHIND. 



From a specimen in which the bladder was firmly contracted and contained but a small amount of fluid. The 

 paravesical fossa is seen on each side of the bladder. The deep peritoneal pouch in front of the rectum 

 is bounded on each side by crescentic sacro-genital folds or " posterior false ligaments of the bladder, " 

 which meet together in the median plane some distance behind the posterior border of the bladder. 



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