Esdin LS 2 Lec 10 Digestive

Lipase small intestine glycerol fatty acids

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Unformatted text preview: Absorbed by secondary active transport similar to carbohydrates absorption •  Taken to the blood via carrier proteins 19 4/21/13 Lipids Digestion because of water difficult Dietary Lipids Salivary glands Stomach Fat globules lingual lipase is activated in stomach by pH bile salts Pancreas & liver Fat droplets pancreatic lipase Small intestine Glycerol, fatty acids, monoglycerides absorption in lymphatic vessels as lipoproteins Lipids Absorption acids and glycerols vessel that contains fatty Lumen of the small intestine Micelle Fatty acid because they are hydrophobic Monoglyceride Apical side RER passive diffustion Triglyceride Chylomicron Basal side cannot get into capillaries, too big Blood vessels Lymphatic vessels 20 4/21/13 Lipids Absorption •  Glycerol and fatty acids are packaged in micelles •  Once micelles approach the apical side of the epithelial cell membrane, the glycerol and fatty acid passively diffuse into the cell Lipids Absorption •  The glycerol and fatty acid are then resynthesized into triglycerides and packaged into a lipoprotein known as chylomicrons •  Chylomicrons are then exocytosed into the lymphatic system 21 4/21/13 Large Intestine all helpful stuff has been removed by now Transverse colon Descending colon Ascending colon bacteria give vitamin K: development Small intestine Appendix beginning Cecum Rectum Sigmoid colon Anal sphincter The Large Intestine •  Some absorption of water and electrolytes occurs •  Houses bacteria that absorb vitamin K, link to •  Indigested material is known as feces infection can occue if bacteria comes loose or blockage prevents material from leaving the lumen enzyme, location of function, function, location of release, active or inactive pepsin, stomach, digesting, chief cells, (active is pepsin, inactive is pepsinogen) pancreatic lipase, duodenum, breaks lipids, pancreas, needs bile to emulsify where are proteins, starches/sugars, and fats first broken down? why are many released in inactive form? so they don't digest themselves what would happen if duct from pancreas to duodenum was clogged? eventually you would digest your pancreas because the enzymes would start breaking down the pancreas 22...
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This note was uploaded on 04/02/2014 for the course CHEM 14BL taught by Professor Pang during the Summer '07 term at UCLA.

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