CHAPTER XV 

 THE REPRODUCTIVE SYSTEM 



GENERAL CONSIDERATIONS 



The reproductive system differs structurally, widely in the two 

 sexes. The several organs involved, however, are in general strictly 

 homologous in the male and female organism. . The differences result 

 from a divergent specialization concomitant with a division of labor 

 in the reproductive act and process. The specialization involves both 

 progressive and regressive differentiation, the latter producing certain 



Sinus prostaticus 



Corpus Cavernosa penis 



Urethral gland." 



Urethra 



Corp. cav. urethrae 



Prepuce 

 Glans penis 



Fossa navicularis 



Ampulla of ductus defer ens 



Seminal vesicle 

 Ejaculatory duct 

 Prostate gland 



Bulbourethral gland 

 Bulbus urethrae 

 Ductus deferens 



Paradidymis 

 Ductuli efferentes 

 Ductulus abberans 



Ductus epididymis 



Rete testis 

 Tubuli recti 



^Tubuli contorti 

 A ppendix epididymis 



FIG. 418. DIAGRAM OF MALE GENITALIA. (Adapted from Merkel.) 



vestigial appendages, of different origin in the opposite sexes. The 

 MALE ORGANS OF REPRODUCTION include a primarily and essentially in- 

 ternal group of genital organs, namely, the testis, and its associated 

 29 455 



