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Absorption of Nutrients in Small Intestines

The digested food is now in simple form and is ready to use by cells. The inner wall of small intestines is called as Mucosa, it has numerous finger like projections called as Villi (singular- villus),
which in-turn has finger like projections called as micro-villi. The purpose of villus is to provide large surface area for nutrient absorption. Villi have large network of blood capillaries, where the nutrients are absorbed in blood by diffusion.Most of the nutrients are absorbed in jejunum. except

  • Iron is absorbed in duodenum 
  • vitamin B12 and bile salts are absorbed in the terminal ileum.
Through blood digested food reaches to each and every cell of the body.


Location: India

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