Nutrition Section 1 Practice Test

Fat digestion follows a clear sequence in the small intestine. First, bile salts emulsify fats into smaller droplets, increasing surface area. Then pancreatic lipase acts on these emulsified fats to release fatty acids and monoglycerides. The products associate with bile salts to form micelles, which deliver them to the intestinal lining for absorption. Inside the enterocytes, they are reassembled into triglycerides and packed into chylomicrons that enter the lymphatic system before reaching the bloodstream. So the best order is emulsification, pancreatic lipase action, micelle formation, lymphatic transport, then blood. This sequence matters because lipase needs emulsified fat to work, micelles form after lipase action, and transport to blood occurs after lymphatic drainage.