GENERATIVE SYSTEM. 845 



the adjacent tissue, and never thrown into rugae. Projecting 

 from the posterior end of the trigonus into the opening of the 

 urethra, is a slight elevation of the mucous coat, the uvula 

 vesicce. 



The bladder is maintained in position by false and true liga- 

 ments. The false ligaments are folds of peritoneum, of which the 

 anterior or broad one passes from the fundus along the abdominal 

 floor to the umbilicus ; two lateral folds extend from the sides of 

 the bladder to the pelvic walls, enclosing in their folds the remains 

 of the obliterated umbilical arteries ; finally a superior fold con- 

 nects it with the rectum. The remains of a foetal organ, the 

 urachus, appearing as a fibrous cord, are generally described as 

 lying between the folds of the broad ligament. 



The true ligaments are formed by processes of the pelvic 

 fascia. These are the inferior true ligaments, attached to the 

 inferior aspect of the bladder and prostate gland ; the lateral 

 true ligaments which are attached to the sides of the organ, 

 while the recto-vesical ligament joins the bladder and rectum 

 posteriorly. 



In the female, the uterus lying between the rectum and the 

 bladder, we have recto-uterine and vesico-iderine ligaments. 



The principal artery is the vesico-prostatic branch of the 

 internal iliac. Lymphatics are numerous in the walls of the 

 trigonus. The nerves are from the hypogastric and sacral 

 plexuses. 



The use of the bladder is to store the urine and at intervals, 

 by contraction of its walls, force it into the urethra or excretory 

 tube. 



The Urethra is a tube common, in the male, to the urinary 

 and genital systems, and will be described with the latter. 



Generative System. 



Animals possess the faculty of reproducing or propagating their 

 species, and this function may be non-sexual or sexual, the former 

 being confined to certain lowly-organised classes of animals. 



In all the higher animals the generation of a new being is 

 dependent upon two individuals, a male and a female, the female 

 furnishing a germ or ovum, the male a fecundating fluid or sperm, 

 which animates the germ and renders it fit for development. 



