22 INTRODUCTION TO SEXUAL PHYSIOLOGY 



tliey have once been activated by prostatic secretion, they do 

 not maintain life so long as when they do not come into contact 

 with such fluid. The view that the prostatic secretion serves to 

 cleanse the urethra of urine prior to the ejaculation of semen 



Corp. 

 iSpong 



Fig. 11.— Transverse section through adult human penis, x 3. 

 (After Eberth, from Nagel.) 



.1., Artery ; 6'., cutis ; Co7n., commuuication between the two corpora 

 cavernosa ; Corp. tSpong., corpus spongiosum ; F., fascia ; A., nerves ; 

 >S'., septum ; T.A., tunica albuginea ; Te. SuJjc, tela subcutanea penis ; 

 7'(?. S'uhf., tela subfascialis ; Ti/n., tunica penis ; Tr., trabeculae of 

 corpus cavernosum ; U., urethra ; T., veins. The tunica3 and telae 

 form the integument and give off the trabecuhe within. 



receives support from the fact that the first fluid to escape 

 is largely prostatic fluid and contains no spermatozoa. 



Cowpers glands are a pair of small tubulo-racemose glands 

 placed at or near the anterior end of the urethra into which 

 they open by two ducts. They are lined internally by an 

 epithelium which secretes a viscous fluid the significance of 

 which is unknown. It may serve the same function as the 

 prostatic secretion. The glands of Littre, which are very small, 

 are present in the lining membrane of the urethra and contribute 

 also to the seminal eiaculate. 



