740 



THE URINARY TRACT. 



FIG. 333. DIAGRAM OF THE KIDNEY. 



A, renal artery; V, renal vein; T, tuft; CT, capsule of tuft; AV, afferent vessel; EY r 

 efferent vessel ; CC, capillaries of convoluted tubules ; CS, capillaries of straight tubules ; B, 

 arterial branch to the cortical substance ; AP, arterial branch to the pyramidal substance ; 

 VM, vasa recta; CP, capillaries of the straight collecting tubules; L, capillaries of the 

 papilla ; CI, convoluted tubule of the first order ; N, narrow or loop-tubule ; GH, convoluted 

 tubule of the second order; S, straight collecting tubule in the medullary ray of the corti- 

 cal substance ; C, straight collecting tubule in the pyramidal substance ; P, the same at the 

 papilla. 



