Digestion is the process of breaking down the large, insoluble, complex food substances into a minute, soluble and simple absorbable forms. It is the catabolic process, which releases energy.
Digestion is of two types:
Mechanical Digestion: It includes the breakdown of large food molecules into smaller molecules.
Chemical Digestion: It includes the breakdown of complex food molecules into small molecules in the presence of the digestive enzyme.
Absorption is the process which is carried out after the food is being digested. Once after the food molecules are converted into soluble and simple absorbable forms, they are passed into the bloodstream through the channels of the intestinal wall and are distributed to different parts of the body through the blood cells.
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