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Excretion by Mind Map: Excretion
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3 types of exretion


The expelling of CO2 when you breath out


The expelling of harmful substances from your blood


The expelling of water and waste through your skin , called sweat

The process in which urine is expelled

1. Blood with waste flows to kidneys, nephrons in kidney filter blood, clean blood leaves kidneys

2.Concentrated waste or urine flows to urine bladder, bladder holds urine till the urine can be expelled, urine leaves urethra

Bacterial infections

Usually,caused by holding waste to long

When bacteria gets into urinary bladder

Kidney stones/diseases

Stone:When salt and waste collects to form a cyrstal

Disease:when irreaparable damage happens to kidneys,blood usually has to be filtered by a machine after,called dialysis