Human Excretory System

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Across
  1. 2. A waste substance that is excreted by the kidneys, dissolved in water
  2. 3. A liquid containing urea dissolved in water
  3. 8. The process of eliminating food waste that is not absorbed
Down
  1. 1. A tube that carries urine from the bladder to the outside of the body
  2. 4. The removal of waste substances produced in the body cells
  3. 5. An organ that filters the blood and removes urea from it
  4. 6. A tube that carries urine from the kidney to the bladder
  5. 7. A word that means ‘to do with the kidneys’