Brush and floss your teeth and gums every day. The kidneys act as filters to clean the blood. They get rid of waste and extra fluid. The glomeruli clean the blood. Then waste and extra fluid go out into the urine through the ureter.
Clean blood goes out of the kidney and back into the bloodstream through the vein.
You have two kidneys. Your kidneys clean your blood and make urine. Here is a simplified drawing of one. Keep your blood sugar as close to normal as you can. Ask your doctor what blood sugar numbers are healthy for you.