THE DEVELOPMENT OF THE UROGENITAL SYSTEM. 



399 



Prox. convoluted tubule ~" " 

 Dist. convoluted tubule 

 Henle's loop 



FIG. 355 



Ampulla of straight tubule 



Henle's loop 



Distal part of 

 convoluted tubule 



Bowman's capsule 



Proximal part of 

 convoluted tubule 



Distal part of 



convoluted tubule 



"Neck" 

 Bowman's capsule 



FIG 356 



Prox. convoluted tubule 

 Dist. convoluted tubule 

 Henle's loop 



Prox. convoluted tubule 

 Bowman's capsule 

 Straight tubule 



Prox. convoluted tubule 

 ^ Dist. convoluted tubule 



Prox. convoluted tubule 



^ Dist. convoluted tubule 

 Bowman's capsule 



Ascending 



_ Descending 



arm of Henle's loop 



FIG. 357- 

 FIGS. 355, 356 and 357. From reconstructions of convoluted renal tubules in successive 



stages of development. 

 26 



