7 6 



ABDOMEN 



the substance of the bulb. It supplies the corpus caver- 

 nosum urethrae with blood (Figs. 83, no). 



The deep artery of the Bern's, immediately after its origin, 

 pierces the medial aspect of the crus penis, and is carried 

 forwards in the substance of the corpus cavernosum penis, 

 which it supplies with blood (Figs. 102, no). 



The dorsal artery of the penis runs forwards in the interval 

 between the crura penis, and, passing between the two layers 



Urinary bladder 



Pelvic fascia - 



Obturator 



internus 



Prostate 



Prostatic 



urethra 



M. levator ani 



Pubic arch 

 Deep perineal . - 

 muscles V. 

 Inferior fascia of \ 

 urogenital diaphragm 



Crus penis " 

 M. ischiocavernosus 



Posterior scrotal 

 vessels and nerves 



Fascia of Colles .-3 



Upper fascia of 

 pelvic diaphragm 

 '(O.T. visceral layer) 

 Pelvic fascia 



Sheath of 

 prostate 



Inferior fascia of 

 pelvic diaphragm 

 Parietal pelvic 

 fascia 

 Obturator 

 membrane 



... Superior fascia of 



urogenital diaphragm 

 -Pudendal vessels and 

 nerve 



_Crus penis covered by 

 ~M. ischiocavernosus 



M. bulbocavernosus covering 

 the bulb of penis 



FIG. 84. Vertical section (schematic) through the pubic arch to show the 

 two perineal compartments 



of the suspensory ligament of the penis, gains the dorsum of 

 the penis, where it will be afterwards traced (Fig. 102). 



N. Pudendus (O.T. Pudic Nerve). The pudendal nerve 

 is a branch of the sacral plexus. Following the internal 

 pudendal artery it enters the canal in the obturator fascia, 

 and, after giving off the inferior hczmorrhoidal nerve, it divides 

 into two terminal divisions, viz. (i) the perineal nerve, and 

 (2) the dorsal nerve of the penis. 



The perineal nerve has been seen to break up into the 

 following branches : 



