956 



MALE ORGANS OF GENERATION. 



the fibres of the superficial fascia ; it is triangular in form ; one edge is 

 free, another is connected with the fore part of the pubic symphysis, and 

 the third with the dorsum of the penis. 



The integuments of the penis are supplied with blood by branches of the 

 dorsal artery of the penis and external pudic ; the veins join the dorsal and 

 external pudic veins. Their nerves are entirely derived from the dorsal 

 branches of the pudic nerves. 



THE CORPORA CAVERNOSA. 



The corpora cavernosa form the principal part of the body of the penis, 

 and chiefly determine its form and consistence. They are two cylindrical 

 bodies, placed side by side, flattened on their median aspects, and closely 

 united and in part blended together along the middle Hue for the anterior 

 three-fourths of their length ; whilst at the back part, in contact with the 

 symphysis pubis, they separate from each other in form of two bulging and 



Fi gi 670. Fi S- 670. ROOT OF THE PENIS ATTACHED 



TO THE RAMI OF TUB PuBES AND 



ISCHIUM (from Kobelt). f 



a, a, accelerator urinae muscle covering 

 the bulb of the spongy body of the urethra, 

 which presents at e, posteriorly, a median 

 notch ; b, 6, anterior slips of the muscle 

 or bulbo-cavernosi ; c, c, crura of the 

 penis, presenting an oval dilatation, g, or 

 bulb of the corpus cavernosum ; d, d, 

 erectores penis muscles ; /, corpus spon- 

 giosum urethra. 



then tapering processes named cntra, 

 which extend backwards attached 

 to the pubic and ischial rami, and 

 invested by the erectores penis or 

 ischio-cavernosi muscles. Imme- 

 diately behind their place of union, 

 they are slightly enlarged, so as to 

 form what are named by Kobelt 

 the bulbs of the corpora cavernosa, 

 parts which attain a much greater 

 proportionate development in some 

 quadrupeds. In front, the corpora 

 cavernosa are closely bound together 



into a single rounded extremity, which is covered by the glans penis and 

 firmly connected to its base by fibrous tissue. 



The under surface of the united cavernous bodies presents a longi- 

 tudinal groove, in which is lodged the corpus spongiosum, containing the 

 greatest part of the canal of the urethra. The upper or anterior surface is 

 also marked with a slight median groove for the dorsal vein of the penis, 

 and near the root is attached to the pubes by the suspensory-ligament. 



Structure. The median septum between the two corpora caveruosa is 

 thick and complete behind ; but farther forward it becomes thinner, and 

 imperfectly separates their two cavities, for it presents, particularly towards 

 the anterior extremity, numerous clefts, extending from the dorsal to the 

 urethral edge, and admitting of a free communication between the erectile 



