THE ^lALE UEETHEA. 



437 



of tliG bladder its diameter is nearly 4 lines, in the next part it widens 

 a little, so as to be rather more than 4 lines, and in old persons 5 or 6, 



Fig. 316. 



Pig. SIC— The lowku part of the Bladder and the Prostatic, Membranous, and 

 Bulbous parts of the Urethra opened from above. (A. T. ) 



A portion of the wall of the bladder and the upper part of the prostate gland have 

 teen removed, the corpora cavernosa penis have been separated in the middle line and 

 turned to the side, and the urethra has been slit up ; the bulb is left entire below, and 

 upon and Ijehind it the glands of Cowper with their ducts have been exposed, t, placed 

 in the middle of the trigonum vesicce ; u, u, oblique apertures of the ureters ; from these an 

 elevation of the wall of the bladder is sho\\Ti running do^vTi to « v, the uvula vesicffi ; I, the 

 longitudinal muscular fibres of the bladder jiassing dov,-n upon the prostate ; s v, the, 

 circular fibres of the sphincter surrounding the neck ; p, the glandular part of the pro- 

 state ; 2'', the prostatic portion of the urethra ; from the uvula vesicfe a median ridge is 

 seen descending to the caput gallinaginis, in which s indicates the opening of the 

 sinus pocularis, and d, that of one of the ductus ejaculatorii ; m, the commencement of 

 the membranous portion of the urethra ; &, the bulb of the spongy body ; h', the bulbous 

 part of the urethra ; c, one of Cowper's glands ; c d, c d, course and orifice of its duct 

 lying upon the bulb, and passing forward between the spongy body and the urethra, into 

 which along with its fellow it opens ; c c, one of the corpora cavernosa. 



