THE URO-GENITAL SYSTEM. 



107 



(2) The vas deferens and common ejaculatory duct. The duct 

 opens, as in the female, at each side of the uterus masculinus in 

 the prostatic urethra ; 



Epididymis 



Mullerian 

 duct. 



uasa aber.. 

 oblitJ 



open, com 

 ejac. duct 



sessile hydatid 

 stalked hydatid 

 right testicle 



-paradidymis 



-vas. deferens 

 (Wolf, duct) 



urethra, 



■ues/c. semin. 

 "Mull. duct, 

 uterus masculinus 



Fig. 82. — Remnant of the "Wolffian Body in the Male. 



(3) The vesiculae seminales arise from the Wolffian ducts as 

 acino-tubular diverticula. 



The stalked hydatid frequently seen on the upper extremity 

 of the testicle corresponds to the hydatid at the fimbriated 

 extremity of the Fallopian tube in the female, and is of similar 

 origin (Figs. 81 and 82). 



The genital tubules of the Wolffian body become the vasa 

 efferentia and coni vasculosi. 



The renal tubules of the Wolffian body form : 



(1) The vasa aberrantia found in the globus minor ; 



(2) The paradidymis or organ of Geralde's occasionally situ- 

 ated in the cord above the globus major. All these tubules, 

 both genital and renal of the Wolffian body, are situated origin- 

 ally in the mesentery of the Wolffian body (Fig. 80). 



Thus it will be seen that while in the male the Wolffian 

 tubules and duct become part of the genital system, in the female 



