CHAPTER XV. 



THE REPRODUCTIVE ORGANS. 



The reproductive organs of the male are the testes, 

 prostate glands, Cowper's gland and the penis. 



THE 



The testes are composed of tubular glands, and pro- 

 duce the spermatozoa. They are covered with a cap- 

 sule of fibrous tissue. The -coverings of the testes are 

 tunica vaginalis, tunica albuginea and tunica vascu- 

 losa. These coats dip down into the organ and divide 

 it into lobes. The lobes are composed of convoluted 

 tubules, straight tubes and a net work of tubes. The 

 convoluted tubules are lined with four layers of epithe- 

 lial cells, beginning on the basement membrane, and 

 coming outwards. You see the parietal cells, then the 

 mother cells, then the spermatoblasts and finally the 

 spermatozoa all these layers are found in the lumen 

 of the convoluted tubule. And the spermatozoa are the 



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