More enzymes and digestion

• 1. Enzymes used in the digestive system are produced by specialised cells in the glands and in the gut lining
  2. different enzymes catalyse the breakdown of different food molecules
• Salivary glands

  • these produce amylase enzymes in the saliva
• Liver

  • where bile is produced
  • bile neutralises stomach acid and emulsifies fat
• Gall bladder

  • where bile is stored before it’s released into the small intestine
• Large intestine

  • where excess water is absorbed from food
• Rectum

  • where the faeces are stored before they leave through the anus
• Small intestine

  1. produces protease,amylase and lipase enzymes to complete digestion
  2. this is also where the digested food is absorbed out of the digestive system into the blood
• Pancreas

  • produces protease, amylase and lipase enzymes. It releases these into the small intestine
• Stomach

  1. it pummels the food with its muscular walls
  2. it produces the protease enzyme, pepsin
  3. it produces hydrochloric acid for two reasons: a)to kill bacteria b) to give the right ph for the protease enzyme to work (ph2 =acidic)