158 



TOPOGRAPHICAL ANATOMY OF THE 



The contents of the male pelvis may be tabulated as follows : — 



(Rectum. 

 I ITrinary bladder. 

 I Prostate. 

 Vi-scera. -j Part of the urethra. 



I Deferent ducts (terminal part), 

 I Seminal vesicles. 

 I. Prostatic utricle. 



Blood vessels. | S'T?P'^"^ r'"*"^', ^"^ ^^^''" ^^'^^^^'^s- 

 ( Middle sacral vessels. 



Lymph glands and lymphatic vessels. 



I" Pudendal nerve. 



I Obturator nerve. 



"l Sacral plexus and its branches. 



[Pelvic part of the sympathetic nervous system. 



Nerves. 



Before any dissection is effected, it is well to examine, as far as 



Mesorectum. 



Recto-vesical excavation. 



Prostatic utricle 



"Rectum. 



Seminal vesicle. 

 (2i^ 0i- Ureter. 



~ Ductus deferens. 

 I'rogenital fold. 

 Lateral umbilical fold. 



Urinary bladder. 



Middle umbilical fold. 



Fig. 69. — Diagram to illustrate the arrangement of the peritoneum in the male 

 pelvis. Transverse section. The red line represents the peritoneum. 



possible, the general disposition of the viscera and the arrangement of 

 the peritoneum in the pelvis. 



At the inlet to the cavity the urinary bladder and the termination 

 of the small colon at its mergence into the rectum will be encountered. 

 The urinary bladder is pear-shaped with its narrow end directed 

 towards the tail. When entirely empty it is small in size, firm to the 

 touch, and so retracted into the pelvis that scarcely anything but the 

 broad vertex is determinable until actual dissection is performed. 

 When distended with urine it projects for a variable distance into the 

 abdomen. 



The arrangement of the peritoneum of the pelvis, as at present 



