UROGENITAL SYSTEM. 



times) the uvula vesicae. The prostatic ducts open mainly into 

 grooves on each side of the ridge, slightly at its ends. On the 

 summit of the ridge is a slit-like orifice (prostatic utricle, or 

 sinus pocularis), leading backward and upward into the pros- 

 tate for a quarter of an inch. On each side of the mouth of 

 the utricle is the smaller opening of the common ejaculatory 

 duct. [1177] 



The membranous portion, the shortest and narrowest, is less 

 than half an inch long; it extends from the apex of the pros- 

 tate, downward and forward through the triangular ligament 

 to the bulb of the corpus spongiosum. It lies about an inch 

 behind and below the subpubic ligament; the Compressor 

 urethrse surrounds it and Cowper's glands lie on each side, be- 

 hind it. Its upper wall is longer than its posterior wall. The 

 spongy portion is about six inches long and begins half an inch 

 in front of the posterior end of the bulb; it runs through the 

 centre of the corpus spongiosum to the meatus urinarius. It 

 runs at first forward through the bulb, and then downward and 

 forward to a point in front of the lower part of the symphysis 

 pubis, beyond which the penis is movable. Its calibre is en- 

 larged in the bulb and also (fossa navicularis) in the glans; 

 the external urethral orifice (meatus urinarius) is a vertical 

 slit, the narrowest and least dilatable part of the canal. The 

 ducts of Cowper's glands open on the floor of the proximal 

 part. Numerous pit-like recesses (lacunae) open into it and 

 have their openings directed obliquely forward. [1179] 



THE FEMALE REPRODUCTIVE ORGANS. 



Ovary. This is about the size and shape of an almond; it 

 lies, with its long axis vertical and its outer surface against the 

 pelvic wall, in a little peritoneal fossa (fossa ovarica) which 

 extends from the obliterated hypogastric artery to the ureter 

 and uterine vessels. The upper end (tubal pole) is the larger 

 and more rounded and lies below the external iliac vessels; 

 the lower end (uterine pole) lies just above the pelvic floor. 

 16 [241] 



