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The Kidney

A Presentation About the Kidney for the AQA GCSE
by

Mat Carpenter

on 7 September 2010

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Transcript of The Kidney

The Kidney A healthy kidney produces urine by: First filtering the blood Reabsorbing all the sugar Reabsorbing the dissolved ions needed by the body Reabsorbing as much water as the body needsReleasing urea, excess ions and water as urine. Kidney Function Extension: What would be the Symptoms of a malfuncitoning kidney? Condense the Kidney Function into 10 words Sugar and dissolved ions be actively absorbed against a concentration gradient. People who suffer from kidney failure may be treated either by using a kidney dialysis machine or by having a healthy kidney transplanted. In a dialysis machine a person’s blood flows between partially permeable membranes. The dialysis fluid contains the same concentration of useful substances as the blood.
This ensures that glucose and useful mineral ions are not lost. Urea passes out from the blood into dialysis fluid. Treatment by dialysis restores the concentrations of dissolved substances in the blood to normal levels and has to be carried out at regular intervals. A kidney transplant enables a diseased kidney to be replaced with a healthy one from a donor. However, the donor kidney may be rejected by the immune system unless precautions are taken. To prevent rejection of the transplanted kidney:
A donor kidneywitha‘tissue type’similartothatoftherecipient is used
The recipient is treated with drugs that suppress the immunesystem. Making Ethical Choices How do we decide which is the best option? A five year old boy who has had sudden kidney faliure. A 60 Year old man who has prostate cancer and very low kidney function A 35 year old mother of 2 had a kidney infection that massively reduced her kidney function - she will soon have side effect of this. A Heroin user contacted a bacterial infection that destroyed his Kidney activity A 30 Year old Amatuer Cyclist with a family Lesson Objectives:
To describe the function of the kidney
To explain the options after kidney faliure
To evaluate how ethical decissions should be made
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