THE GENITO-URINARY APPARATUS. 263 



(c) Longitudinal internal layer. 



The submucous or cellular coat, made up of fibrous and 

 elastic tissue, supports the mucous coat and unites it with the 

 muscular. 



The mucous membrane is smooth and of a pale-rose color. 

 Its epithelium is continuous with that of the ureters and pelvis 

 of kidneys; its superficial layer, large, tessellated, polyhedral 

 cells, its deep layer of club-shaped and spindle-shaped cells. 



The inner surface of the base presents a triangular space, 

 the vesical trigone, or trigonum vesicce apex in front, formed 

 by the orifice of the urethra, its basal angles behind about two 

 inches apart, and each about one and one-half inches behind the 

 urethral orifice, formed by the orifices of the ureters : 



u 



IV. 1Y 2 " 



U U 



2" 



The uvula vesicce is an elevation of mucous membrane pro- 

 jecting from the floor near the apex of the trigone into the 

 orifice of the urethra. 



The arteries are the superior, middle, and inferior vesical, 

 with branches from the obturator and sciatic in the male, and 

 branches from the vaginal and uterine in the female. 



The veins from the vesicO-prostatic empty into the internal 

 iliac vein. 



Lymphatics follow the course of the vessels and enter the 

 lumbar glands. 



The nerves to the base and neck are from the third and 

 fourth sacral, and to the summit from the hypogastric plexus 

 of the sympathetic. 



GENERATIVE APPARATUS. 



Male Organs. 



The male organs of generation consist of the testes, vasa 

 deferentia, vesicula? seminales, and penis. 



THE TESTICLES (testes) are two glandular bodies which 

 secrete the spermatic fluid, and are suspended by the spermatic 

 cords within the scrotum, the left a. little larger and lower than 

 the right. They are oval, compressed laterally, measure one and 

 a half to two inches in length, one inch in breadth, one and one- 

 fourth inches in their antero-posterior diameter, and weigh from 

 six to eight dnu-hms. 



