Lipid digestion

• Lipid digestion

  Where: Duodenum

  Secretion source: Pancreas via the pancreatic duct

  Enzyme: Lipase

  Substrate: Triglycerides

  Products: Fatty acids and glycerol
• Lipid digestion:

  Lipids are broken down in the extracellular duodenum by lipase from the pancreas via the pancreatic duct, into fatty acids and glycerol.
• What does emulsification mean and how does it increase the rate of lipid digestion?

  • Emulsification breaks up large lipid droplets into smaller lipid droplets.
  • This increases the surface area for chemical digestion by lipase
• Where are the products of lipid digestion absorbed?

  In the Ileum, into the lacteal
• uses of lipids in the body:

  • protection of vital organs
  • electrical and thermal insulation
  • store/source of energy
  • produce phospholipids
  • produce metabolic water
  • excess is stored as fat reserves