Food is absorbed in its simple forms. The simpler forms are formed by the hydrolysis of food in different parts of alimentary canal. Most of the carbohydrates are absorbed as monosaccharides. Monosaccharides like, glucose and galactose (end product of milk sugar) are absorbed in the duodenum and jejunum by active process. The two monosaccharides with glucose are absorbed most rapidly, i.e., galactose is absorbed first with glucose