2.30 understand that bile is produced by the liver and stored in the gall bladder, and understand the role of bile in neutralising stomach acid and emulsifying lipids

  • Bile – produced by the liver, stored in the gallbladder, excreted in the small intestine.
  • After the food is acidified after being in the stomach, bile is alkaline when released into the small intestine. Therefore, the alkali from the bile brings the stomach acid pH up and allows the small intestines enzymes to work at their optimum pH (slightly alkaline).
  • Bile also emulsifies fat – gives it a larger surface area which is important to make the lipase work.

Emulsification  – the breakdown of fat globules in the duodenum into small droplets which provides a larger surface area for pancreatic lipase to digest fats to fatty acids and glycerol.

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