150 ABDOMEN 



bladder. No force must be used. If any difficulty is 

 experienced, and the point of the staff will not enter the 

 membranous urethra, introduce the index finger of the left 

 hand into the anal canal and again endeavour to guide the 

 point of the staff in the proper direction. It is possible that 

 stricture of the urethra due to disease may prevent the 

 passage of the staff. In that case the dissectors should seek 

 an opportunity of passing the staff in a more satisfactory 



Parietal pelvic fascia 



% Seminal vesicle 



\ 

 Bladder \ 



Vesical layer of 

 pelvic fascia - , 



Prostate 



Symphysis 



Pubo-prostatic 

 ligament 



Arcuate ligament 



Transverse liga- 

 ment of pelvis 



Corpus caver- 1 

 nosum penis 



Rectum 



->r- /]- Upper fascia of 

 .' '] I pelvic diaphragr 



Dilatation of urethra in bulb 



Bulb of corpus cavernosum urethrae 



Rectal fascia 



Recto-vesical fascia 

 - Upper fascia of urogenital 

 diaphragm 



Lower fascia of urogenital diaphragm (O.T. lower 

 layer of triangular lig.) 



FIG. 76. Diagram of Urinary Bladder and Urethra. 



body. The dissectors should note that the point of the staff 

 is kept to the floor of the canal as it is passed through the 

 penile part of the urethra, because there are depressions in 

 the roof in which it might catch ; and that, because there is 

 a depression in the floor of the penile part of the canal, 

 immediately in front of the termination of the membranous 

 part, the tip of the staff must be raised as it is passed from 

 the penile into the membranous part. 



When the staff has been passed note that it can be felt 



