PELVIS MINOR 



45 1 



The lower, pointed end of each vesicle rests on the base 

 of the prostate, and the blunt, upper end lies in the sacro- 

 genital fold of peritoneum, in relation with the recto- 

 vesical excavation of peritoneum, and with the entrance of 

 the ureter .into the bladder. At their lower extremities 

 the vesicles are separated from each other only by the inter- 

 posed deferent ducts, but they diverge as they ascend, and 

 their upper ends are wide apart. They are enclosed, together 

 with the deferent ducts, which lie along their medial sides, 

 in a dense sheath derived from the recto-vesical layer of the 

 visceral pelvic fascia. 



Urete 



Seminal vesicle 



Rectu 



Internal urethral 



orifice 



Trigone of bladder 



Ureter 



Ductus deferens 



FIG. 215. Horizontal section through the Bladder and Rectum at the level 

 at which the ureters enter the bladder. 



Each vesicula seminalis is in reality a tube, 12.5 to 15 cm. 

 (five or six inches) long. It is bent repeatedly upon itself and 

 is bound into vesicular form by the dense areolar tissue in 

 which it is embedded. When it is unravelled, several blind 

 diverticula will be found to proceed from the main tube. The 

 lower end of the tube, which is called the excretory duct, 

 emerges from the pointed lower end of the vesicle and joins 

 with the ductus deferens, at an acute angle, to form the 

 ejaculatory duct. 



Ductus Deferens (O.T. Vas Deferens). The deferent duct, 

 or duct of the testis, was previously traced to the abdominal 

 inguinal ring (p. 237), through which it enters the abdomen. 

 n 29 a 



