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The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). ...
Digestion is the breakdown of large insoluble food compounds into small water-soluble components so that they can be absorbed into the blood plasma.In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream.
Table of the different major digestive enzymes. Digestive enzymes are found throughout much of the gastrointestinal tract.In the human digestive system, the main sites of digestion are the mouth, stomach, and small intestine.