explain how a kidney functions by starting with the blood going into the kidney and ending with going out the kidney
the renal artery brings blood into the kidney. the blood supplies oxygen and nutruients to the cells of the kidneys and picks up the cells waste products.then the blood goes through the nephron where it is filtered. then is goes through the tubule of nephron then the reabsorbed chemicals and nutrients go back in the blood. also the correct amount of water is returned to the blood. and finally the blood leaves the kidney through the reanal vein.