Dialysis - GCSE Biology Definition
Reviewed by: Lára Marie McIvor
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Dialysis is a medical process that helps clean the blood when someone’s kidneys are not working properly. Our kidneys are important because they remove waste and extra water from our blood to keep us healthy. When kidneys fail, dialysis does this job by using a special machine. During dialysis, a person's blood flows from their body into the machine, which filters out the waste and then sends the clean blood back into the body. There are two main types of dialysis: haemodialysis, which uses a machine, and peritoneal dialysis, which uses the lining of the abdomen to filter the blood. Dialysis is vital for people with kidney failure, helping them stay healthy and live longer.
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