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The liver site as the storage location for the fat-soluble vitamins.

What is fat-soluble vitamins?

  • Along with dietary fat absorption, fat-soluble vitamins are also deposited in the liver and fatty tissue of the body.
  • Vitamins that are fat soluble are kept in adipose tissues.
  • These vitamins are not absorbed directly into the bloodstream.
  • Instead, they are carried through the lymphatic system and released into the bloodstream after being absorbed by the lacteals in the small intestine via chylomicrons.
  • Chylomicrons are primarily responsible for transporting fat-soluble vitamins from intestinal epithelial cells to the bloodstream.
  • However, the ileum is where fats and fat-soluble vitamins are absorbed. The liver excretes bile salts into the duodenum, which are necessary for the ileum to absorb long-chain fatty acids and fat-soluble vitamins.
  • Simple diffusion is used to absorb fat-soluble vitamins once they have been integrated into micelles.
  • They are contained in chylomicrons inside the mucosal cells, which travel to the lymph before reaching the blood.

Learn more about fat-soluble vitamins here:

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