In order to be absorbed into the watery blood plasma, big, insoluble food molecules must be broken down into smaller, water-soluble food molecules during digestion.
These tiny molecules enter the bloodstream through the small intestine in certain species.
Steps for Carbohydrate Digestion:
Carbohydrates first break down in the small intestine, not in the stomach, where they do so chemically.
Pancreatic amylase and disaccharidase complete the chemical deterioration of digestible carbs.
The monosaccharides are taken up by the circulatory system and transported to the liver.
Saliva is secreted by salivary glands in the mouth, which helps to moisten food.
The salivary glands then produce the enzyme salivary amylase, which starts the process of breaking down the polysaccharides in the carbohydrate diet, as the food is chewed.