BIO - digestion

• salivary glands produce amylase enzyme in the saliva
• stomach:

  • it pummels the food with its muscular walls
  • it produces the protease enzyme, pepsin
  • it produces HCL acid for two reasons; to kill bacteria, to give the right PH for the protease enzyme to work
• the liver is where bile is produced (bile neutralises stomach acid and emulsifies fat)
• the gall bladder is where bile is stored, before its released into the small intestine
• the pancreas produces protease, amylase and lipase enzymes, it releases these into the small intestine
• the large intestine is where excess water is absorbed from the food
• the small intestine produces protease, amylase and lipase enzymes to complete digestion, this is also where the digested food is absorbed out of the digestive system into the blood
• the rectum is where the faeces are stored before they come out of the anus