Difference between revisions of "Dialysis"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| − | [[Dialysis]] is a medical procedure to remove | + | [[Dialysis]] is a medical procedure to remove waste from the [[blood]] using an artificial [[kidney]]. |
===About Dialysis=== | ===About Dialysis=== | ||
: [[Dialysis]] is used when a person's [[kidney]]s fail to remove [[urea]]. | : [[Dialysis]] is used when a person's [[kidney]]s fail to remove [[urea]]. | ||
: In [[dialysis]] the [[blood]] is pumped out of the body through a tube with a [[permeable]] [[membrane]]. Surrounding that tube is a [[fluid]] which contains no [[urea]], but a safe [[concentration]] of [[glucose]] and [[salt]]s to allow the [[diffusion]] of [[urea]] out of the [[blood]] due to a [[Concentration Gradient|concentration gradient]] but no [[diffusion]] of [[salt]]s or [[glucose]]. | : In [[dialysis]] the [[blood]] is pumped out of the body through a tube with a [[permeable]] [[membrane]]. Surrounding that tube is a [[fluid]] which contains no [[urea]], but a safe [[concentration]] of [[glucose]] and [[salt]]s to allow the [[diffusion]] of [[urea]] out of the [[blood]] due to a [[Concentration Gradient|concentration gradient]] but no [[diffusion]] of [[salt]]s or [[glucose]]. | ||
Revision as of 14:25, 3 April 2019
Key Stage 4
Meaning
Dialysis is a medical procedure to remove waste from the blood using an artificial kidney.
About Dialysis
- Dialysis is used when a person's kidneys fail to remove urea.
- In dialysis the blood is pumped out of the body through a tube with a permeable membrane. Surrounding that tube is a fluid which contains no urea, but a safe concentration of glucose and salts to allow the diffusion of urea out of the blood due to a concentration gradient but no diffusion of salts or glucose.