How food is absorbed inside the small intestine?

How food is absorbed inside the small intestine?  
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1 Answer

Answer :

In ileum completely digested food is ready to absorb. Small intestine is 20 feet long. Its internal structure consists of thousands of finger like projections called villi. The glucose, amino acids, glycerol and fatty acids of digested food diffuse through lining of small intestine into the blood stream and lacteal.

Absorption of Carbohydrates: -

All carbohydrates are absorbed in the form of glucose, fructose, and lactose.

Absorption of Proteins: -

 Proteins are absorbed in the form of amino acids.

Absorption of Fats: -

Some of the fatty acids and glycerol do not enter the blood capillaries of the

villi. They enter and recombine in the intestinal lining to form fats again. Then

these fats pass into the lacteals. 

 
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