controlling blood sugars

• too high

  pancreas secretes insulin --> glucose goes from bloodstream to cells for respiration

  excess glucose converts to glycogen for a energy store
• too low

  pancreas secretes glucagon

  causes liver and muscles to convert glycogen back into glucose

  (negative feedback)
• type 1 diabetes

  • pancreas cannot produce (enough) insulin
  • injections needed
• type 2 diabetes

  • cells do not absorbs glucose as they should
  • obesity increases risk of developing