Haemodialysis and Kidney Failure — NEET Biology
📚 Practice ConceptMalfunctioning of kidneys can lead to accumulation of urea in blood, a condition called uremia, which is highly harmful and may lead to kidney failure. In such patients, urea can be removed by a process called haemodialysis. During the process of haemodialysis, the blood drained from a convenient artery is pumped into a dialysing unit called artificial kidney. Blood drained from a convenient artery is pumped into a dialysing unit after adding an anticoagulant like heparin. The unit contains a coiled cellophane tube surrounded by a fluid (dialysing fluid) having the same
Which of the following statements regarding the process of hemodialysis are correct? S1: Blood drained from an artery is pumped into the dialysing unit after adding an anticoagulant like heparin. S2: The dialysing fluid used has a composition identical to plasma, including nitrogenous wastes, to facilitate efficient filtration. S3: The cellophane membrane of the dialysing unit acts as a selectively permeable barrier, allowing passage of molecules based on a concentration gradient. S4: The cleared blood is pumped back to the body through a vein, but only after adding anti-heparin to it. S5: Hemodialysis is considered the ultimate, long-term cure for chronic renal failure, similar to a kidney transplant.
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