Controlling Blood Glucose

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  • Created by: Sarah
  • Created on: 26-01-15 14:12
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  • Regulating blood glucose
    • Pancreas
      • lies under the stomach
      • EXOCRINE function
        • cells manufacture and secrete digestive enzymes
        • secret into pancreatic duct
        • released in the small intestines
      • ENDOCRINE FUNCTION
        • islet of Langerhans
          • small patches of tissue with endocrine function
        • A- cells
          • secrete glucAgon
          • detect high blood glucose
        • B-cells
          • secrete insulin
          • detect low blood glucose
    • OPTIMUM CONDITIONS
      • RISE in blood glucose
        • detected by B-cells
          • insulin secreted
            • acts on hepatocytes and muscle cells
              • binds to membrane receptor
                • activates adenyl cylase
                  • ATP -> cAMP
                  • more glucose channels
                  • GLYCOGENESIS
                  • conversion to FAT
                  • glucose respiration
      • FALL in blood glucose
        • detected by A-cells
          • glucAgon secreted
            • acts on hepatocytes
              • binds to membrane receptor
                • activates adenyl cylase
                  • ATP -> cAMP
                  • GLYCOGENOLYSIS
                  • FATTY ACID RESPIRATION
                  • GLUCONEOGENESIS

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