558 



ABDOMEN 



to the medial sides of the seminal vesicles. The pelvic 

 portions of the ureters can be seen descending, outside the 

 peritoneum, along the front of the hypogastric arteries, and 

 turning medially, below the ductus deferentes, towards the base 

 of the bladder. The prostate lies below the bladder and 

 encloses the prostatic part of the urethra (Fig. 214). 



The Pelvic Peritoneum. The peritoneum passes into the 



Lateral wall 



of pelvis 



Paravesical fossa 



Reflection of 

 peritoneum 



Empty bladder 



Symphysis pubis 



Retro-pubic 

 pad of fat 



Corpus caver- 



nosum penis 



Corpus 



cavernosum 



urethras 



Bulb of the penis 



Bulbo-cavernosus 



Prostate 



Anal canal 



Bulbo-urethr 



gland 

 Sphincter ani 

 internus 

 Sphincter ani 

 externus 



FIG. 214. Medial section through the Pelvis. The bladder, which is empty, 

 does not present the usual form. 



pelvis through the inlet, and gives partial or complete coverings 

 to various pelvic viscera. It covers the upper surface of the 

 bladder, and passes from the lateral borders of that surface 

 to the lateral walls of the pelvic cavity as the lateral false 

 ligaments of the bladder. Turning over the posterior border 

 of the upper surface of the bladder, it descends, for a slight 

 distance, on the fundus or base of the viscus, and then, if 

 the bladder is empty, it projects backwards as a semi- 

 lunar ledge or fold, the sacro-genital fold. In the middle 

 portion of this fold are enclosed the seminal vesicles and 



