442 A MANUAL OF ANATOMY. 



The Deep Vessels and Nerves of the Penis. The 

 arteries are from the internal pudic, page 412. Nerves 

 from the internal pudic nerve, page 414. 



The Dorsal Vein of the Penis. (Usually single, may 

 be double.) 



This emerges from a venous plexus which surrounds the 

 glans penis, passes backward along the dorsum of the 

 penis between the two dorsal arteries, receives in this part 

 of its course large branches from the body of the penis 

 which emerge from between the corpus spongiosum and 

 the corpora cavernosa and wind around the side of the 

 penis to enter the dorsal vein. 



Continuing backward, the vein penetrates the suspensory 

 ligament of the penis, then passes through the opening in 

 the triangular ligaments close to the under surface of the 

 pubic arch, divides into two branches which terminate in 

 the prostatic plexus. 



Before passing through the triangular ligaments the 

 dorsal vein sends communicating branches to the internal 

 pudic veins. See page 413. Within the pelvis it com- 

 municates with the obturator vein. 



DISSECTION. 



Divide the elastic sheath of the penis along the median line, separating the 

 corpora cavernosa from each other, and from the corpus spongiosum. Consult 

 the descriptions of these structures as already given on pages 414, 416. 



Leave the corpus spongiosum attached by the membranous urethra to the 

 prostate and bladder, keep them covered with a damp cloth until such time as 

 the bladder has been dissected and the urethra can be opened from end to end. 



Incise the skin of the scrotum along the median raphe, and reflect it. 

 Identify the dartos and its connections with the superficial abdominal fascia, 

 then reflect it like the integument. Remove the testicle from the scrotum. 



The various covering's of the cord and testicle (Fig. 

 93) are those that are derived from the several layers of the 



