STRUCTURE OF THE PROSTATE GLAND. 299 



through the colliculus seminalis as far nearly as to the urethra, 

 where they break up into capillaries. The veins originating 

 in these capillaries join the veins of the urethra. The nerves 

 appear as medullated fibres distributed through the cortical 

 portion of the prostate, they here also contain numerous large 

 ganglion cells, or communicate with oval ganglionic swellings. 

 The latter are less numerous than in the vesiculse seminales, 

 and their diameter is about 0'53 of a millimeter. On the side 

 of the prostate J. Miiller observed there were already ganglia 

 on the lymphatic nerves. 



Fig. 214 A. 



Fig. 214 A. Longitudinal section of the segment of the prostate that 

 is situated behind the urethra of an adult, a, Compact ; 6, central ; 

 c, spongy glandular substance ; d, muscular investment of the central 

 portion. Magnified three diameters. 



Pacinian bodies are also found in the cortex of the prostate. 

 The substance of the organ is traversed by very numerous 

 small fasciculi of medullated fibres that everywhere form 

 plexuses, and numerous nerve trunks run vertically between 

 the sphincter urethrse and the circular transversely striated 

 muscular fibres of the cortical portion, where they ascend to 

 the urethra. Interspersed amongst their fibres are chains of 

 ganglion cells. 



In many of the ducts and acini yellowish or brownish scaly masses 

 are found, which are to be regarded as a secretion of the glandular 

 epithelium, and their formation can be followed here in precisely the 



