THE GENITOURINARY APPARATUS. 277 



Cell-wall, or riteUine membrane, or zona pellucida; 

 Cell-contents, or I'itellus ; 

 Nucleus, or germinal vesicle; 

 Nucleolus, or germinal spot. 



At the seat of the rupture the walls collapse, and the vesicle 

 immediately becomes filled with a blood-tinged fluid, which, 

 together with the hypertrophy of the walls, forms the false corpus 

 luteum, which remains and develops for two to three months and 

 gradually disappears. 



Under the influence of pregnancy it enlarges for some time, 

 forms the true corpus luteum of pregnancy, and disappears two 

 to three months after parturition. 



The arteries are the ovarian from the aorta. 



The veins form an intricate plexus from which emerge ves- 

 sels corresponding to the arteries; they form a plexus near the 

 ovary the pampiniform plexus which communicates with the 

 uterine and terminates as in the male. 



The lymphatics are numerous and of large size in the im- 

 pregnated uterus, and terminate in the lumbar and pelvic glands. 



The nerves are from the ovarian and hypogastric plexuses 

 of the sympathetic. 



The Parovarium consists of a series of tortuous tubes ex- 

 tending from the ovary to a main transverse trunk (the epoopho- 

 ron), near the Fallopian tubes. It is also called the organ of 

 Rosenmuller, and is the remains of the Wolffian body of embryo 

 life, and corresponds to the origin of the epididymis in the male. 



The Fallopian tubes, or oviducts, are the passageways for the 

 ovum from the ovaries to the uterus. They are trumpet-shaped 

 tubes about four inches long, with the largest extremity outward. 



Its ovarian extremity is fimbriated; hence its name, fim- 

 Iriated extremity. It is also called morsus diaboli, from its sup- 

 posed erectile action. 



One of these fimbrise extends along the border of the broad 

 ligament to the outer extremity of the ovary, forming the tubo- 

 ovarian ligament. 



The ovarian orifice ostium abdominale, or pavillion is 

 much larger than the uterine, or ostium internum. 



The tube has three coats : 



Serous, derived from the peritoneum; 



Fibro-muscular, from the uterine walls; 



Mucous coat, with ciliated columnar epithelium, continuous 

 with the uterine. 



The remains of the duct of Miiller form the hydatid of 

 Morgagni, a small vesicle, attached by a long pedicle near the 

 fimbriated extremity. 



