THE PERINEUM, MALE. 413 



is forward and inward through the compressor urethrae 

 muscle. When near the middle line it penetrates the super- 

 ficial layer of the triangular ligament and enters the bulb. 

 It supplies Cowper's glands, the membranous urethra, the 

 bulb, and the corpus spongiosum. 



(4) The artery to the cms. The larger of the terminal 

 branches of the internal pudic. This perforates the anterior 

 layer of the triangular ligament, enters the crus penis 

 (corpus cavernosum), through the centre of which it passes 

 to its anterior extremity, giving off numerous branches in 

 its course to this body. 



(5) The dorsal artery of the penis. The smaller 

 branch of the bifurcation of the internal pudic. For its 

 course, see above. 



The Internal Pudic Vein. 



This begins as a branch from the corpus cavernosum, 

 receives a communicating branch from the dorsal vein of 

 the penis, retraces the course of the internal pudic artery, 

 receiving in its course branches corresponding to the 

 branches of the artery, and finally empties into the begin- 

 ning of the internal iliac vein. 



The Internal Pudic Nerve. Figs. 82, 83, 1 12, 1 14. 



This is found in the dissection of the perineum, as it 

 enters the ischiorectal fossa through the lesser sacrosciatic 

 foramen along with the internal pudic artery. It courses 

 along the side of this fossa with the artery, being contained 

 in a canal in the obturator fascia, and divides into the 

 perineal and dorsal nerve of the penis (clitoris). Before 

 this division the nerve gives off the (i) inferior hemor- 

 rhoidal branch, which passes inward to the external sphinc- 

 ter of the anus and the integument over it. 



