Gastrointestinal · Hepatic physiology module; hepatic architecture, synthetic functions, detoxification, bilirubin metabolism, and LFT interpretation
By completing this question set, you will be able to map the liver's zonal architecture to zone-specific metabolic functions and zone-specific injury patterns. You will trace each hepatic synthetic function — albumin, coagulation factors, glucose, lipids, urea cycle — to its clinical consequence when impaired, and distinguish acute from chronic markers of hepatic synthetic failure. You will explain the first-pass effect and predict how portosystemic shunting or liver failure alters drug bioavailability. You will derive the bilirubin metabolic pathway step by step, identify where each congenital bilirubin disorder disrupts the pathway, and classify jaundice as pre-hepatic, hepatic, or post-hepatic based on the pattern of bilirubin fractions. You will explain why neonatal jaundice is physiologic and when it becomes pathologic, and trace the mechanism of kernicterus. You will interpret any LFT panel by classifying it as hepatocellular, cholestatic, or mixed injury and generating an appropriate differential diagnosis.