URINARY SYSTEM. 



461 



At this point each of these terminates in a sac-like dilatation 

 into which projects, hernia-like, a vascular tuft (glomerulus 

 Malpighii), formed by the capillarization of an arteriole 



Fig. 125. Tubuli of the kidney.* 



(afferent vessel), Fig. 125, a. These capillary tufts converge 

 to form a small efferent vessel which leaves the glomerulus at 



sczewsky and Sucquet tried to prove. These looped tubules (going 

 from the glomeruli towards the medullary substance of the kidney, 

 and, in fact, following the same course as the urine) are continua- 

 tions of the tubes of Ferrein, whose walls at a certain place become 

 much smaller, rectilinear, and descend in the medullary substance 



* Origin and dichotomy of the urinifcrous canaliculi in the medullary sub- 

 stance of the human kidney (tubes of Bellini). (Schumlansky.) 



