This educational presentation provides a comprehensive study of the biliary system, focusing specifically on the anatomy and physiological roles of the liver, pancreas, and gallbladder. It details how the liver performs essential tasks such as bile synthesis, nutrient storage, and the filtration of toxins and old blood cells. The text also explains the endocrine and exocrine functions of the pancreas, highlighting its importance in insulin secretion and digestion. Furthermore, the material outlines various diagnostic procedures, including HIDA scans and ERCP, used to identify conditions like gallstones or biliary obstructions. Finally, it reviews critical laboratory values and hepatic function tests that clinicians use to evaluate the health of these vital organs.