574 



ABDOMEN 



it was a common surgical procedure to puncture the bladder 

 through this region for the purpose of relieving over-distension. 



Dissection. When the dissector has satisfied himself regarding the rela- 

 tions of the base of the bladder and the possibility of easily distinguishing 

 them with the finger through the rectal wall, he should introduce a blunt- 



Symphysis pubis 



Position of prostate 

 Urethral opening 



Trigo 



Opening of ureter 

 Ureter piercing 

 wall of bladder 



minal vesicle 

 Ductus X 

 deferens 



Obturator canal 



Obturator vessel: 



and nerve 

 Ureter 



Inferior vesica 

 middle haemor 

 rhoidal arterie 

 Pelvic p 



Obturator 

 internus 

 Parietal 

 pelvic fascia^. 

 Piriformis 

 Inferior glutaea 

 and internal 

 udendal arteries 

 Pelvic plexus 



Sacral plexus 

 Sacro-iliac joint 



^Parietal pelvi 

 fascia 



Superior glutaea 

 artery piercing 

 parietal pelvic fa 

 Inferior glutaeal an 

 ternal pudendal art 

 Lumbo-sacral cord ai 

 ist sacral nerve 

 Sacro-iliac joint 



Branches of superior' 

 haemorrhoidal artery 



Branches of superior 

 haemorrhoidal artery 



Terminal portion 

 of pelvic colon 



FIG. 225. Oblique Section from above downwards and forwards through the 

 Pelvis. The peritoneum has been removed so as to expose the viscera 

 and the parietal pelvic fascia clothing the pelvic wall. 



pointed knife, or a pair of scissors, through the internal urethral orifice 

 into the urethra, and lay the canal open by dividing its dorsal wall from the 

 bladder to the end of the penis. 



Urethra Virilis (Male Urethra). The urethra is the canal 

 through which the urine, the semen, and the secretions 

 of the vesiculse seminales, the prostate, and bulbo-urethral 

 glands (Cowper's), are emitted from the body. It commences 



