534 .MALE ORGANS OF GENERATION. 



enclosed in a dense fibrous membrane, derived from the pelvic fascia, 

 and is constricted beneath the isthmus of the prostate gland into a 

 small excretory duct. The vas deferens, somewhat enlarged and 

 convoluted, lies along the inner border of each vesicula, and is in- 

 cluded in its fibrous investment. It communicates with the duct of 

 the vesicula, beneath the isthmus of the prostate, and forms* the 

 ejaculatory duct. The ejaculatory duct is about three quarters of 

 an inch in length, and running forwards, first between the base^of 

 the prostate and the isthmus and then through the elastic tissue of 

 the veru montanum, opens upon the mucous membrane of the 

 urethra, near to its fellow of the opposite side, at the anterior ex- 

 tremity of that process. 



MALE ORGANS OF GENERATION. 



The organs of generation in the male are, the penis and the testes, 

 with their appendages. 



The Penis is divided into a body, root, and extremity. The body 

 is surrounded by a thin integument, which is remarkable for the 

 looseness of its cellular connexion with the deeper parts of the 

 organ, and for containing no adipose tissue. The root is broad, and 

 firmly adherent to the rami of the os pubis and ischium by means 

 of two strong processes, the crura, and is connected to the sym- 

 physis pubis by a fibrous membrane, the ligamentum suspensorium. 

 The extremity, or glans penis resembles an obtuse cone, somewhat 

 compressed from above downwards, and of a deeper red colour 

 than the surrounding skin. At its apex is a small vertical slit, the 

 meatus urinarius, which is bounded by two more or less protuberant 

 labia : and, extending backwards from the meatus, is a depressed 

 raphe, to which is attached a loose fold of mucous membrane, the 

 fraenum praputii. The base of the glans is marked by a projecting 

 collar, the corona glandis, upon which are seen a number of small 

 papillary elevations, formed by the aggregation of minute sebaceous 

 glands, the glandular Tysoni (odoriferse). Behind the corona is a 

 deep fossa, bounded by a circular fold of integument, the prcepulium, 

 which, in the quiescent state of the organ, may be drawn over the 

 glans, but, in its distended state, is obliterated, and serves to facili- 

 tate its enlargement. The internal surface of the prepuce is lined 

 ,by mucous membrane, covered by a thin cuticle ; this membrane, 

 upon reaching the base of the glans, is reflected over the glans penis, 

 and, at the meatus urinarius, becomes continuous with the mucous 

 lining of the urethra. 



* It has been customary hitherto, in works on anatomy, to describe the course of 

 excretory ducts as proceeding from the gland, and passing thence to the point at which 

 the secretion is poured out. In the description of the vas deferens, with its connexion 

 with the duct of the vesicula seminalis, I have adopted this plan, that I might not too 

 far depart from established habit. But as it is more correct and consistent with the 

 present state of science to consider the gland as a developement of the duct, I have 

 pursued the latter principle in the description of most of the other glandular organs of 

 the body. 



