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 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
• It is the former right hepatic artery

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

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

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

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

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?

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

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

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

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

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

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

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

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

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

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

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