The Kidneys

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3 main roles:

1)     Removal of urea
2)     Adjustment of water levels
3)     Adjustment of salt levels


  • The blood flows through the renal artery into the glomerulus which is a bundle of capillaries
  •  A high pressure is built up which squeezes all of the urea, glucose, salt and water out of the blood and into the Bowman’s capsule
  • The membranes between the blood vessels in the glomerulus and Bowman’s capsule act like filters so large molecules like proteins and blood cells are


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