EXCRETORY AND REPRODUCTIVE SYSTEMS. 



parietal layer of the peritoneum. The visceral layer of 

 peritoneum is quite delicate 

 and transparent and lies 

 close to the testis. Immedi- 

 ately surrounding the latter 

 is a dense capsule, the tunica 

 albuginea, sending septa 

 into the interior. Within 

 the tunica vaginalis is the 

 tunica albuginea, closely in- 

 vesting the testicle and ad- 

 jacent to the epididymis, 

 penetrating the substance of 

 the gland, forming a sep- 

 tum known as the medias- 

 tinum testis or corpus High- 

 morianum (Fig. 90). 



The testis is about iy 2 

 centimeters long by i centi- 

 meter thick. On its dorsal 

 surface lies the epididymis, 

 an elongated body composed 

 of an enlarged extremity, 

 the globus major, and an at- 

 tenuated portion, the globus 

 minor. The main portion 

 of a testicle is composed of 

 many minute coiled tubules, 

 tubuli seminiferi, which 

 unite into a few tubules 

 near the surface of the testis 

 beneath the globus major, 

 into which they extend. 

 These tubules are the vasa 



FIG. 90. VENTRAL ASPECT OF THE 

 MALE REPRODUCTIVE ORGANS. 



cr, One of the crura of the penis ; 

 ep, epididymis revealed by cut- 

 ting and reflecting vg, a piece of 

 the tunica vaginalis and albu- 

 ginea; et, external abdominal 

 ring; if, internal abdominal 

 ring; in, inguinal canal ; g, glans 

 penis; gd, Cowper's glands; pe, 

 penis; pr, prostate gland; re, 

 rectum; t, testis from which the 

 tough sheath composed of the 

 levator scroti muscle and cre- 

 master fascia has been removed, 

 leaving it enveloped by the 

 tunica vaginalis ; ts, testicle from 

 which a portion of the tunica 

 vaginalis and albuginea has been 

 reflected; uth, urethra; ur, ure- 

 ters; vd, spermatic cord; vdd, 

 vas deferens within the abdomi- 

 nal cavity; vg, tunica albuginea 

 reflected; vg-, tunica albuginea; 

 v, spermatic vein. 



