Intermediate Lesser Omentum Quiz

Q1. What is the usual anterior-posterior relationship of the portal triad structures within the hepatoduodenal ligament?

• All three structures lie in a single vertical line
• Common bile duct and proper hepatic artery lie anterior to the portal vein
• Portal vein lies anterior to both the artery and bile duct
• The common bile duct lies posterior to the portal vein

Q2. Which structure usually lies on the right side of the hepatoduodenal ligament within the portal triad?

• Proper hepatic artery
• Common bile duct
• Portal vein
• Splenic artery

Q3. Which structure usually lies posteriorly within the portal triad?

• Common bile duct
• Proper hepatic artery
• Cystic artery
• Portal vein

Q4. What is the relationship of the lesser omentum to the epiploic foramen?

• The foramen lies within the greater omentum
• The hepatogastric ligament forms its posterior boundary
• The hepatoduodenal ligament forms its anterior boundary
• The lesser omentum closes the foramen completely

Q5. Which major vessel forms the posterior boundary of the epiploic foramen?

• Portal vein
• Superior mesenteric artery
• Inferior vena cava
• Splenic vein

Q6. Which structure forms the superior boundary of the epiploic foramen?

• Left kidney
• Caudate lobe of the liver
• Pancreatic tail
• Quadrate lobe only

Q7. Which structure forms the inferior boundary of the epiploic foramen?

• First part of the duodenum
• Third part of the duodenum
• Jejunum
• Transverse colon

Q8. Why is the hepatogastric ligament generally thinner than the hepatoduodenal ligament?

• It contains the abdominal aorta
• It lacks the large portal triad structures that thicken the hepatoduodenal ligament
• It is composed of only one peritoneal layer
• It contains the pancreatic tail

Q9. Which vessels can be found within the hepatogastric portion near the lesser curvature?

• Right and left gastric vessels
• Inferior mesenteric vessels
• Right and left gastro-omental vessels
• Renal arteries

Q10. Why is the lesser omentum important in upper abdominal surgery?

• It encloses both kidneys
• It contains key hepatobiliary vessels and defines important peritoneal relationships
• It forms the pelvic floor
• It contains the entire superior mesenteric vascular tree