STRUCTURE OF THE KIDNEY. 



199 



FIG. 234. SECTION THROUGH PART 



OP THE DOG'S KIDNEY. (Ludwig.) 



p, papillary, and g, boundary zones of 

 the medulla; c, cortical layer; h, 

 bundles of tubules in the boundary 

 layer, separated by spaces, 6, con- 

 taining bunches of vessels (not here 

 represented), and prolonged into the 

 cortex as the medullary rays, m ; c, 

 intervals of cortex, composed chiefly 

 of convoluted tubules, with irregu- 

 lar rows of glomeruli, between the 

 medullary rays. 



FIG. 233. VASCULAR SUPPLY OF KIDNEY. 

 (Cadiat.) 



a, part of arterial arch ; &, interlobular artery ; 

 c, glomerulus ; d, efferent vessel passing to 

 medulla as false arteria recta ; e, capillaries of 

 cortex ; /, capillaries of medulla ; g, venous 

 arch ; h, straight veins of medulla ; j, vena 

 stellula ; i, interlobular vein. 



