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Unformatted text preview: Mechanical digestion. Segmentation mixes the chyme with enzymes from the small intestine and pancreas. Bile from the liver separates fat into smaller fat globules. Peristalsis moves the chyme through the small intestine. Chemical digestion. Enzymes from the small intestine and pancreas break down all four groups of molecules found in food (polysaccharides, proteins, fats, and nucleic acids) into their component molecules. Absorption. The small intestine is the primary location in the GI tract for absorption of nutrients. The components of carbohydrates, proteins, nucleic acids, and water-soluble vitamins are absorbed by facilitated diffusion or active transport. They are then passed to blood capillaries....
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- Spring '10