Biology Chapter 7 - Part 2
- Created by: elliebaxter
- Created on: 29-01-17 12:43
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- Biology Chapter 7 - Part 2
- Dialysis
- If a person has kidney failure, they can be kept alive by dialysis
- 1) Blood flows between two partially permeable membranes
- 2) Dialysis fluid contains the same amount of useful substances as the patient's blood so they do not need to be reabsorbed
- 3)Urea diffuses out of the blood
- Dialysis needs to be carried out at regular intervals
- Kidney transplants
- New kidney must be a very good 'tissue match' for it not to be rejected
- The recipient's antibodies might attack the antigens on the donor organs because they recognise them as being foreign
- Following the transplant, the recipient must take immunosupp-ressant drugs
- These weaken the recipient's immune system so they are vulnerable to common infections
- New kidney must be a very good 'tissue match' for it not to be rejected
- Controlling body temperature
- Controlled by thermoregula-tory centre in the brain
- Temperature receptors in the skin send impulses to the brain giving information about the skin temp.
- Controlling blood glucose
- The receptors in the pancreas monitors and controls the levels of glucose in our blood
- Diabetes
- Type 1 diabetes - if no insulin is produced so the blood sugar level gets very high
- Type 2 diabetes - develops when the body does not respond to its own insulin
- Treating diabetes
- Type 1
- Injection before meals
- Exercise
- Diet
- Pancreas transplants
- Transplanting pancreas cells
- Type 2
- Diet
- Loosing weight
- Exercise
- Drugs that's help insulin work
- Type 1
- Dialysis
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