KIDNEY. 



Cortex and Medulla. 



Kidney: A. Cortex: (a) Capsule; (b) Muscular layer; (c) Labyrinth; (d) Malpighian body; 

 (e) Capsule of Bowman; (f) Glomerulus; (g) TJriniferous tubule; (h) Column of Bertini; (i) 

 Medullary ray; ( j ) Blood vessels; (k) Stroma. 



B, Medulla: (1) Malpighian pyramid; (m) Base; (n) Apex, or papilla; (o) Tubules; (p) 

 Sinus exhibiting hilum, pelvis, and calices, 



Uriniferous Tubule. 



TJriniferous Tubule: (a) Neck; (b) Lumen; (c) Proximal convoluted tubule; (d) Spiral 

 tubule; (e) Descending limb of Henle's loop; (f ) Henle's loop; (g) Ascending limb of Henle's 

 loop; (h) Irregular tubule; (i) Distal convoluted tubule; (j) Arched collecting tubule; (k) 

 Straight collecting tubule; (1) Excretory duct, or tube of Bellini. 

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