960 



MALE ORGANS OF GENERATION. 



much according to the length of the penis, and the condition of that organ. 

 Its diameter varies at different parts of its extent, as will be stated more 

 particularly hereafter. The tube consists of a continuous mucous mem- 

 Fig. 674. 



Fig. 674. THE LOWER PART OP THE BLADDER AND THE PROSTATIC, MEMBRANOUS, AND 

 BULBOUS PARTS OF THE URETHRA OPENED FROM ABOVE. 



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

 been 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 behind it the glands of Cowper with their ducts have been exposed, t, placed 

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

 an elevation of the wall of the bladder is shown running down to uv, the uvula vesicse; I, 

 the longitudinal muscular fibres of the bladder passing down upon the prostate ; s v, the 

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

 tate ; p', the prostatic portion of the urethra ; from the uvula vesicae 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 ; b', the bulbous 

 part of the urethra ; c, one of Cowper's glands ; cd,cd, 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. 



