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        | two structures located on each side of the lumbar region that filter blood and secrete impurities, forming urine |  | 
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        | indented opening in the kidney where vessels enter and leave |  | 
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        | system of ducts carrying urine foom the nephrons to the renal pelvis |  | 
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        | microscopic functional units of the kidney, comprised of kidney cells and capillaries, each capable of forming urine |  | 
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        | little ball-shaped cluster of capillaries located at the top of each nephron |  | 
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        | top part of the nephron that encloses the glomerulus |  | 
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        | stem portion of the nephron |  | 
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        | tube that carries urine foom the kidnev to the bladder |  | 
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        | basin-like poftion of the ureter within the kidney |  | 
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        | point of connection between the renal pelvis and ureter |  | 
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        | single canal that carries urine to the outside of the body |  | 
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        | opening in the urethra to the outside of the body |  | 
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        | fluid produced by the kidneys containing water and waste products |  | 
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        | waste product formed in the liver, filtered out of the blood by the kidneys, and excreted in urine |  | 
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        | waste product of muscle metabolism filtered out of the blood by the kidneys and excreted in urine |  | 
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