ANOMALOUS STRUCTURE AT BASE OF BLADDER. 



493 



bladder near the apex of the int. trigonum. (This opening is 

 marked " a " in the second diagram.) 



The blind end lies freely in the tissue between the bladder 

 and rectum, about midway between the vesical ends of the 

 ureters. (The tube is marked " A " in Diagram 1.) 



(b) In the position of the sinus pocularis is a blind dilated sae 

 17 mm. in length and 7 mm. internal diameter. On its upper 



-..€ 



Fig. 2. — Dissection showing bladder opened from in front. The cut is continued 

 down into the urethra, a, opening of the tube marked " A " in diagram 1 ; 

 )3, opening of ureter ; y, opening of com. ejaculatory duct ; 5, opening of 

 dilated sinus pocularis ; e, int. mucous surface of the bladder ; -q, urethra 

 slit open. 



border there is a slight elevation corresponding to the colliculus 

 seminalis, on either side of which are the openings of the 

 common ejaculatory ducts. The sac ends blindly between 

 the two lateral lobes of the prostate in the position indicated 

 by the letter B in the first diagram. There is no middle lobe 

 of the prostate gland. ' ' '' "' 



