#kidney  either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; urine passes out of the kidney through ureters to the bladder
  supertype:  excretory_organ__excretoryorgan__urinary_organ__urinaryorgan  an organ that separates waste substances from the blood and discharges them
  part:  nephron  adrenal_gland  arcuate_artery_of_the_kidney  renal_artery  arcuate_vein_of_the_kidney  renal_vein  venae_interlobulares_renis  venae_renis  renal_cortex  renal_pelvis
  part of:  urogenital_system__urogenital_apparatus__urinary_system__urinarysystem__urinary_apparatus__urinaryapparatu__genitourinary_system__genitourinarysystem__genitourinary_apparatus__genitourinaryapparatu__systema_urogenitale__systemaurogenitale__apparatus_urogenitalis  the system that includes all organs involved in reproduction and in the formation and voidance of urine
  part of:  urinary_tract__urinarytract  the organs and tubes involved in the production and excretion of urine
     part of:  urogenital_system__urogenital_apparatus__urinary_system__urinarysystem__urinary_apparatus__urinaryapparatu__genitourinary_system__genitourinarysystem__genitourinary_apparatus__genitourinaryapparatu__systema_urogenitale__systemaurogenitale__apparatus_urogenitalis  the system that includes all organs involved in reproduction and in the formation and voidance of urine

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