8so 



■A MANUAL OF ANATOMY 



Reflection of- 

 Peritoneum 



artery. It subsequently passes inwards to the bladder, being 

 crossed internally by the vas deferens. Having arrived at the 

 lateral or ureteric angle of the bladder, it passes obliquely through 

 the vesical wall anterior to the upper free end of the vesicula 

 seminalis, being here about 2 inches distant from its fellow, and 

 about i^ inches from the base of the prostate gland. 



Bladder. — ^The bladder, when empty, or only moderately dis- 

 tended, lies entirely within the cavity of the pelvis. When, how- 

 ever, it is fully distended, the apical part of the viscus rises above 

 the level of the symphysis pubis into the hypogastric region of 

 the abdomen for at least 2 inches, and, in cases of marked over-dis- 

 tension, it may reach to the umbilicus, or even higher. The bladder, 

 therefore, has to be considered under two aspects, namely, when 

 empty, or only moderately distended, and when fully distended. 



Left Ureter Tlic bladder, when empty, 



or moderately distended, 

 is triangular, and presents 

 the following component 

 parts: an apex, a base, 

 Line of ,,R«(MIV%'V i/if^v' Mm and a body, the latter 



presenting a superior sur- 

 face, an inferior surface, 

 two lateral borders, a pos- 

 terior border, two lateral 



External Trigone''' '"'^^^^S] ^.^Z.0^ aUglcS, and a UCCk. 



The apex is directed 

 forwards and lies 

 behind the upper 

 part of the sym- 

 It has connected 

 with it the fibrous cord rep- 

 resenting the urachus, which 

 ascends on the posterior sur- 

 face of the anterior abdominal 

 wall to the lower part of the 

 umbilicus. The base or fundus is directed backwards and down- 

 wards towards the rectum, from which it is separated by the 

 vesiculse seminales and terminal portions of the vasa deferentia, 

 and the recto-vesical lamina of the visceral portion of the pelvic 

 fascia. The base is separated from the superior surface by the 

 posterior border, and from each rounded half of the inferior surface 

 by a slight elevation, which extends from the lateral or ureteric 

 angle of either side to the urethral opening. The superior surface is 

 three-sided and slightly convex. It is usually related to a few 

 coils of the small intestine, and a loop or two of the pelvic colon. 

 The inferior surface, which is convex, rests upon (i) the symphysis 

 pubis and the adjacent portions of the posterior surfaces of the 

 bodies of the pubic bones, (2) the retro-pubic pad of fat, (3) the 

 pubo-prostatic ligaments, and (4) the prostate gland. This surface, 

 being rounded, is somewhat indefinitely divided into two lateral 



Common Ejaculatory 

 Duct of Right Side 



physis pubis. 



Fig. 367. — Dissection of the Base 

 OF THE Bladder, showing the 

 Vesicul^e Seminales, Vasa Defer- 

 entia, AND External Trigone. 



