i8 



Diseases of the Genital Organs 



pint of highly fetid urine and smegma. In the barrow 

 these cavities are much smaller but contain a similar fetid 

 material. 



When the penis is protruded as in copulation, the glans 

 penis pushes its way out of the prepuce and that membrane 

 becomes everted to constitute the covering of the penis from 

 the fornix backward for a distance approximately equal to 



Fig. II — Sheath, Prepuce and Protruded Penis of Bull. 

 Lettering same as in Fig. lo. 



the length of the glans. The further protrusion of the penis 

 requires the eversion of the sheath by which it becomes the 

 visceral covering of the base of the penis. It thus transpires 

 that the prepuce and sheath, the epithelial surfaces of which 

 face inwardly while the penis is at rest with a cavity be- 

 tween them and the penis, become reversed when the organ 

 is erected and constitute its immediate covering with its epi- 

 thelium facing outward. The general plan is indicated in 

 Figs. 8-11. 



B. The Female Generative Organs 



The genital system of the mammalian female consists of 

 the ovaries, oviducts, uterus, cervix, vagina, and vulva. 



1. The Ovaries 



The ovaries are the essential reproductive glands of the 

 female. They perform the fundamental generative func- 



