292 ANATOMY AND PHYSIOLOGY FOR NURSES 



ovum in the uterus or Fallopian tube of the female. 

 The head of the spermatozoon enters the ovum, and there 



FlG. 160. Vas deferens and 

 seminal vesicle, A, seen in longi- 

 tudinal, and B, in horizontal, sec- 

 tion : i, Vas deferens; 2, its ter- 

 minal or ampullary portion ; 3, 

 seminal vesicle with (3') its parti- 

 tions; 4, its terminal portion; 5, 

 ejaculatory duct (Testut). 



.d 



FlG. 161. Human spermatozoa, 

 greatly magnified, the one at the 

 extreme left is seen in profile ; the 

 others in surface view ; the one at 

 the right is drawn as described by 

 Jensen : a, Head ; b, terminal nod- 

 ule ; c, middle piece ; d, tail ; e, 

 end-piece of Retzius (Bohm and 

 Davidoff). 



at once begins the process of cell division or segmentation, 

 which is the first step in the development of the embryo. 



REVIEW QUESTIONS 



Name the male organs of generation. 

 What is the prostate gland? 



