In the lumen of the small intestine they are broken

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Unformatted text preview: name Monomer name Enzymes/hormones intestinal lumen intestinal epithelium bile salts chylomicrons lymph system blood vessels Polypeptides are broken down into smaller polypeptides in the stomach. In the lumen of the small intestine they are broken down into amino acids. Then they are taken up into the epithelium of the small intestine where they are broken down into amino acids and absorbed into the blood stream via capillaries there. DNA/RNA are broken down into nucleotides in the lumen of the small intestine. They are then taken up into the epithelium of the small intestine, where they are broken down into nitrogenous bases, sugars, and phosphates, then absorbed into the blood stream via capillaries there. Fat globules in the lumen of the small intestine are emulsified by bile salts. These smaller fat droplets are then broken down into glycerol, fatty acids, and glyderides in the lumen. In the intestinal epithelium, glycerides are made into H2O- soluble globules of phospholipids, cholesterol, and protein called chylomicrons. Chylomicrons are then sent through the lymph system to the heart. Polysaccharides are broken down into smaller polysaccharides in the mouth. In the small intestinal lumen, they are broken down into disaccharides. Then they are taken up into the epithelium of the small intestine where they are broken down into monosaccharides and absorbed into the bloodstream via capillaries there....
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