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Major two functions of kidney are provided below

•    It primary function is to remove waste from blood  and pass it in the form of urine
•    It absorbs water and salt and hence also help in controlling blood pressure

Artificial Kidney

The major role of artificial kidney is to separate waste through dialysis or sometimes also referred as haemodialysis. Special filters are arranged in such a way so that when blood passes through these, the waste from blood automatically passes to the filters. The process is repeated several times to remove the waste.