CH. LIX.] 



THE WOLFFIAN BODIES 



873 



separately by a longitudinal folding in of the pleuro-peritoneal 

 cavity; the true kidney is formed in both sexes as before by a 

 growth backwards from the Wolffian duct. The tubules are at first 

 solid columns of cells which are subsequently hollowed out. 



The Wolffian bodies, or temporary kidneys, as they may be 

 termed, give place at an early period in the human foetus to their 

 successors, the permanent kidneys, which are developed behind them. 



C1 



FIG. 073. Diagram showing the relations of the female (the left-hand figure ?) and of the male (the 

 right-hand figure <$) reproductive organs to the general plan (the middle figure) of these organs in 

 the higher vertebrata (including man). Cl, Cloaca ; R, rectum ; Bl, urinary bladder ; U, ureter ; 

 K, kidney; Uh, urethra; G, genital gland, ovary, or testis ; W, Wolffian body ; W d, Wolfiian duct ; 

 M, Miillerian duct ; Pst, prostate gland ; Cp, Cowper's gland ; C.sp, corpus spongiosum ; C.c, 

 corpus cavernosum. 



?,. Fallopian tube; Gt, Gaertner's duct; Pv, parovarium ; 



In the female. V, vagina; Ut, utems ; 

 A, anus; C.c, C.sp, clitoris. 



In the male. C.sp, C'.c', penis ; Ut, uterus masculinis ; 

 (Huxley.) 



V s, vesicula seminalis ; V d, vas deferens. 



The Wolffian body loses all renal functions. In the male it applies 

 itself to the testis, and is developed into the vasa effercntia, coni 

 vasculosi, and globus major of the epididymis. Its duct forms the body 

 and globus minor of the epididymis, the vas deferens, and the ejacula- 

 tory duct ; the vesicula seminalis is a diverticulum from its lower part. 

 In the female a relic of the Wolffian body persists as the parovarium, 

 a f unctionless collection of tubules lined with ciliated epithelium near 

 the ovary (see p. 821, fig. 613, po)\ in the male a similar relic is 



