Intermediate Quadrate Lobe of the Liver Quiz

Q1. Why is the quadrate lobe considered part of the functional left liver?

• Its vascular and biliary territory corresponds mainly to segment IV of the left liver
• It receives blood only from the splenic artery
• It lies entirely left of the falciform ligament
• It drains bile through the cystic duct

Q2. What is the relationship between the quadrate lobe and segment IV?

• It is unrelated to Couinaud segmentation
• It corresponds mainly to inferior segment IV
• It consists of segments VI and VII
• It corresponds exactly to segment I

Q3. Which portal venous branch principally supplies the segmental territory represented by the quadrate lobe?

• Inferior mesenteric vein
• Hepatic veins
• Branches of the left portal vein
• Right renal vein

Q4. Which hepatic arterial territory principally supplies the quadrate lobe?

• Splenic artery exclusively
• Inferior phrenic artery exclusively
• Segment IV branches commonly arising from the left hepatic arterial system
• Cystic artery exclusively

Q5. How does bile from the quadrate lobe generally drain?

• Into the inferior vena cava
• Through segment IV ducts usually joining the left hepatic ductal system
• Directly into the gallbladder
• Through the pancreatic duct

Q6. What lies between the quadrate lobe and the anatomical left lobe on the visceral surface?

• Porta hepatis
• Inferior vena cava groove
• Gallbladder fossa
• Fissure for the ligamentum teres

Q7. Why can the quadrate lobe appear to belong to the anatomical right lobe despite its functional left-sided identity?

• The quadrate lobe changes sides after birth
• The quadrate lobe has no vascular supply
• Couinaud anatomy uses only the falciform ligament
• External surface boundaries differ from internal functional segmentation

Q8. Which portion of segment IV lies more superiorly than the quadrate surface region?

• Segment IVa
• Segment I
• Segment III
• Segment VIII

Q9. Why is the gallbladder fossa an important landmark for the quadrate lobe?

• It forms the left boundary of the caudate lobe
• It marks the splenic hilum
• It forms the right boundary of the quadrate lobe
• It contains the ligamentum venosum

Q10. How does the quadrate lobe relate to the porta hepatis?

• It lies entirely posterior to the inferior vena cava
• It lies anterior to the porta hepatis
• It forms the posterior wall of the lesser sac
• It lies inside the portal vein