THE REPRODUCTIVE ORGANS 



a 



FIG. 489. Section of a Tubule of the Testicle of a Rat, to Show the Formation of the 

 Spermatozoa, a, Spermatozoa; b, seminal cells; c, spermatoblasts, to which the sper- 

 matozoa are still adherent; d, membrana propria; e, fibro-plastic elements of the connective 

 tissue. (Cadiat.) 



FIG. 490. Dissection of the Base of the Bladder and Prostate Gland, Showing the 

 Vesiculae Seminales and Ductus Deferens. a, Lower surface of the bladder at the place 

 of reflection of the peritoneum; b, the part above covered by the peritoneum; , left ductus 

 deferens, ending in e, the ejaculatory duct; the ductus deferens has been divided near i, 

 and all except the vesical portion has been taken away; s, left vesicula seminalis joining the 

 same duct; s,s, the right ductus deferens and right vesicula seminalis, which has been 

 unraveled; />, under side of the prostate gland; m, part of the urethra; u, u, the ureters 

 (cut short), the right one turned aside. (Haller.) 



