The hepatoduodenal ligament is a component of which peritoneal fold?

• A. Greater Omentum
• B. Lesser Omentum
• C. Falciform Ligament
• D. Coronary Ligament

Answer: (B)

The hepatoduodenal ligament is the thickened free edge of the lesser omentum, the peritoneal fold that connects the liver to the stomach and the proximal duodenum. The lesser omentum has two parts: the hepatogastric ligament and the hepatoduodenal ligament. The hepatoduodenal part carries the portal triad—common bile duct, proper hepatic artery, and portal vein—into the liver, forming the anterior boundary of the omental foramen. That connection to the stomach/duodenum and its content of the portal triad is why it’s classified with the lesser omentum. The other peritoneal folds listed serve different connections: the greater omentum drapes from the stomach to the transverse colon; the falciform ligament links the liver to the anterior abdominal wall; and the coronary ligaments are reflections between the liver and the diaphragm.