CAS BI 315 Lecture Notes - Lecture 21: Emulsion, Epithelium, Amphiphile
9 Jan 2017
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Bile salts emulsify the fat by breaking it up and keeping it from rebounding together: hydrophobic and hydrophyllic ends. In the small intestine: cck releases the pyloric valve to allow the chyme through, pancreatic lipase: takes a tg and breaks it down to 2 fatty acids and one monoglyceride, cck inhibits appetite. Colipase released by the pancreas: water soluble region can latch onto a water soluble lipase, pancreatic lipase does the digestion and the colipase is just the anchor that holds it in place. Micelle: has the bile salts on the outsides that keeps the fatty acids and the monoglycerides inside (put in the amphipathic area) If the little digested fats moves into epithelial cell, it allows room for one to leave the micelle to leave and go into solution and eventually move into epithelial cell by diffusion, this is all a slow process.
