• The kidneys are a pair of bean-shaped organs just above the waist.
  • They are important organs with many functions in the body.
  • The function of the kidney is to filter blood and form urine.
  • Urine is the liquid waste product of the body that is excreted by the urinary system.
  • The kidneys control the amount of water, ions, and other substances in the blood by excreting more or less of them in urine.
  • They also secrete hormones that help maintain homeostasis.
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