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Endocrine system (Includes (Thyroid (Releases Calcitonin - Lowers blood…

- - - - Glucagon - acts in the liver and increase glucose by stimulating the breakdown of glycogen
    - - Insulin - promotes glucose uptake into the body cells
- - - - Hormones - can only trigger a reaction in specific cells
        
        Target cells
        
        Need to have the correct receptors
        
        Hormone-target-cell relationship
        
        Either localised or widespread
      - Mostly made of either amino acids - Peptides or proteins
        
        Lipids - e.g. Cholesterol
      - Solubility
        
        Lipid Soluble - Can glide through cell membrane - Receptors are inside their target cells
        
        Water Soluble - Cant get across cell membrane - receptors are on the outside of the membranes
  - - - Secretes - Oxytocin - the love hormone