Controlling blood glucose

HideShow resource information
  • Created by: Jo Wells
  • Created on: 03-05-13 21:37
View mindmap
  • foods containing carbohydrate put glucose into the blood (from gut)
    • normal metabolism of cells removes glucose from the blood
      • vigorous exercise removes much more
    • Controlling Blood Glucose
      • glucose levels must be kept steady
        • changes are monitored & controlled by the pancreas
          • insulin
            • if blood glucose level is too high, insulin is added
              • makes liver turn glucose into glycogen
                • thus reducing the blood glucose
          • glucagon
            • if blood glucose level is too low, glucagon is added
              • makes liver turn glycogen into glucose
                • thus increasing the blood glucose
      • type 1 diabetes
        • caused by a lack of insulin
          • means a person's blood glucose can rise to a level that can kill them
        • can be controlled in 2 ways
          • avoiding foods in simple carbohydrates
            • can also be helpful to exercise after eating - not always v. practical
          • injecting insulin into the blood at mealtimes
            • will make liver remove the glucose as soon as it enters the blood from gut (when being digested) = v. effective
            • amount depends on person's diet & how active they are
            • insulin used to be extracted from animals, but now human insulin made by genetic engineering = no adverse reactions
            • injecting insulin helps control a person's blood glucose level, but may still have long-term health problems
              • not as good as having a working pancreas
        • can get a pancreas transplant
          • can be rejected
        • research into artificial pancreases & stem cells is ongoing, but there's a way to go


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Circulation resources »