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Explore the crucial role of bile acids and bile salts in lipid emulsification, digestion, and absorption in this comprehensive video lecture on GI physiology and biochemistry. Delve into the functions of the liver and gallbladder, understanding the differences between lipid-soluble and water-soluble substances, as well as polar and non-polar molecules. Learn about chylomicrons, micelles, and the amphipathic properties of bile acids. Gain insights into solubility, solutions, and their importance in the digestive process. Discover the recycling of bile acids, the formation of gallstones, and the impact of liver cirrhosis on bile acid metabolism. Examine the causes and consequences of malabsorption related to bile acid deficiency.