Advanced Ligamentum Teres Quiz

Q1. What is the anatomical basis for recanalization of an umbilical venous channel in the ligamentum teres region?

• It is the former right hepatic artery
• It is the obliterated common bile duct
• It is a remnant of the urachus
• It follows the former left umbilical venous pathway and can be associated with reopened or enlarged venous channels

Q2. Why is the umbilical portion of the left portal vein important when tracing the ligamentum teres?

• It is the origin of the cystic duct
• It marks the hepatic endpoint of the former umbilical venous pathway
• It drains directly into the right renal vein
• It is part of the hepatic venous outflow

Q3. How does the ligamentum teres help identify the left sagittal fissure during liver surgery?

• It forms the posterior wall of the gallbladder
• It occupies the groove for the inferior vena cava
• It lies within the right portal fissure
• It occupies the anterior left sagittal fissure and leads toward the left portal region

Q4. Why can dividing the falciform ligament near the ligamentum teres cause unexpected bleeding in portal hypertension?

• The inferior vena cava lies in its free margin
• Dilated paraumbilical collateral veins may be present
• The splenic artery passes through the falciform ligament
• The hepatic artery proper normally runs inside the ligamentum teres

Q5. How does the ligamentum teres differ from the medial umbilical ligaments?

• The ligamentum teres is an arterial remnant
• All are remnants of the ductus venosus
• It is a venous remnant, while the medial umbilical ligaments are arterial remnants
• All are remnants of the urachus

Q6. Why does the ligamentum teres not correspond to the functional division between the right and left liver?

• The functional liver has no right-left division
• The ligamentum teres is located outside the abdomen
• Functional division follows portal and biliary territories rather than the umbilical fissure
• The ligamentum teres contains the entire portal vein

Q7. Which fetal vessel becomes the ligamentum venosum, providing an important contrast to the ligamentum teres?

• Left umbilical vein
• Ductus venosus
• Right umbilical artery
• Vitelline artery

Q8. How can paraumbilical collateral flow associated with the ligamentum teres reach systemic circulation?

• Through the pancreatic duct
• Through the hepatic artery
• Through the common hepatic duct
• Through communications with veins of the anterior abdominal wall

Q9. Why is the ligamentum teres relevant when approaching the left portal pedicle?

• It marks the right hepatic vein exactly
• It directly contains the entire left portal vein
• It encloses the common bile duct throughout its course
• It provides a surface guide toward the left portal venous region

Q10. Which statement best integrates the anatomy of the ligamentum teres?

• It is a branch of the proper hepatic artery
• It is the adult remnant of the ductus venosus
• It is an extrahepatic bile duct
• It is a fetal umbilical venous remnant linking surface, portal, embryologic, and collateral venous anatomy