Hepatic Veins Flashcards

Trace the hepatic veins through the liver, including their drainage territories, anatomical relationships, variations, and clinical significance.

Card 1 of 30Question

What are the hepatic veins?

Veins that drain blood from the liver directly into the inferior vena cava.

In This Section

1. What are the hepatic veins?

Veins that drain blood from the liver directly into the inferior vena cava.

2. What are the three principal hepatic veins?

The right, middle, and left hepatic veins.

3. Where do the major hepatic veins terminate?

In the inferior vena cava near the superior posterior surface of the liver, just below the diaphragm.

4. From which microscopic vessels does hepatic venous drainage originate?

Hepatic sinusoids, which drain into central veins of the hepatic lobules.

5. What is the venous drainage pathway from the central veins to the major hepatic veins?

Central veins join sublobular veins, which converge into progressively larger hepatic veins.

6. How do hepatic veins differ from portal veins in their position within the liver?

Hepatic veins run between functional hepatic sectors, whereas portal vein branches travel within portal tracts.

7. Which major hepatic vein drains the right lateral sector of the liver?

The right hepatic vein.

8. Which Couinaud segments are primarily drained by the right hepatic vein?

Segments VI and VII, with variable contributions from segments V and VIII.

9. Which anatomical plane contains the right hepatic vein?

The right portal fissure, separating the right anterior and posterior hepatic sectors.

10. Which hepatic vein runs approximately along the principal plane separating the functional right and left liver?

The middle hepatic vein.

11. What surface landmark approximately corresponds to the course of the middle hepatic vein?

Cantlie's line, extending from the gallbladder fossa toward the inferior vena cava.

12. Which Couinaud segments commonly contribute blood to the middle hepatic vein?

Segments IV, V, and VIII, with variable drainage patterns.

13. Which hepatic vein primarily drains the left lateral hepatic sector?

The left hepatic vein.

14. Which Couinaud segments are primarily drained by the left hepatic vein?

Segments II and III, with variable contributions from segment IV.

15. Which anatomical plane is associated with the left hepatic vein?

The left portal fissure, separating the left medial and lateral hepatic sectors.

16. Which two major hepatic veins commonly unite before entering the inferior vena cava?

The middle and left hepatic veins.

17. How does the right hepatic vein usually enter the inferior vena cava?

Through a separate opening, although its termination may vary.

18. How does the caudate lobe commonly drain its venous blood?

Through multiple short hepatic veins that drain directly into the inferior vena cava.

19. What are accessory hepatic veins?

Additional veins that drain hepatic tissue directly into the inferior vena cava independently of the three major hepatic veins.

20. Which accessory vein may provide substantial drainage from the inferior posterior right liver?

An inferior right hepatic vein, when present.

21. Do hepatic veins normally contain functional valves?

No. Hepatic veins are normally valveless.

22. How do the hepatic veins relate to Glisson's sheath?

They course separately from the portal triads enclosed by Glisson's sheath.

23. Why are the major hepatic veins important landmarks in functional liver anatomy?

Their courses help define boundaries between hepatic sectors and guide anatomical liver resections.

24. What is Budd-Chiari syndrome?

Obstruction of hepatic venous outflow, involving hepatic veins or the hepatic portion of the inferior vena cava.

25. What happens to hepatic sinusoidal pressure when major hepatic venous outflow is obstructed?

It increases, producing hepatic congestion and potentially ascites.

26. Why may the caudate lobe enlarge in Budd-Chiari syndrome?

Its direct venous drainage into the inferior vena cava may remain patent despite obstruction of major hepatic veins.

27. Which imaging technique is commonly used to assess hepatic vein patency and blood flow direction?

Doppler ultrasonography.

28. Which procedure creates an intrahepatic shunt between a portal vein branch and a hepatic vein?

Transjugular intrahepatic portosystemic shunt (TIPS).

29. Why is identifying accessory hepatic veins important before liver transplantation or resection?

Unrecognized drainage pathways may cause venous congestion or significant bleeding if divided.

30. What distinguishes hepatic venous drainage from hepatic portal venous inflow?

Hepatic veins carry blood out of the liver to the inferior vena cava, while portal veins deliver blood into the liver.