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  • Digestion
    • Chemical digestion
      • Enzymes break down food molecules
    • The mouth (starting point)
      • Mechanical
        • Biting
          • Increases food surface area
            • Easier for chemical digestion
          • Physically breaks down food
      • Chemical
        • Amylase
          • From salivary glands
          • Breaks down carbohydrates
      • The Oesophagus
        • Tube food goes down when swalloed
        • Doesn't digest food only transports it
        • Bolus= Chewed up manky food
        • Wave of muscle contraction squeezes bolius down
          • Peristalsis
        • The stomach
          • Mechanical
            • Churns food
              • Breaks bits of food off bolus
          • Chemical
            • Pepsin turns on in acid
              • Pepsin= Protease
                • Breaks down protien
          • Kills any pathogens
          • Liver
            • Makes Bile
              • Emulsifies(break down) fats
              • Neutralises stomach

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