Great Saphenous Vein Flashcards

Study the great saphenous vein, including its origin, course, tributaries, anatomical relationships, venous drainage, and clinical importance.

Card 1 of 30Question

What is the longest superficial vein in the human body?

The great saphenous vein.

In This Section

1. What is the longest superficial vein in the human body?

The great saphenous vein.

2. In which tissue layer does the great saphenous vein travel?

The subcutaneous tissue, within the saphenous compartment superficial to the muscular deep fascia.

3. From which vein does the great saphenous vein originate?

The medial marginal vein of the foot, which continues from the medial end of the dorsal venous arch.

4. What is the relationship of the great saphenous vein to the medial malleolus?

It passes anterior to the medial malleolus.

5. What is the course of the great saphenous vein through the leg?

It ascends along the medial aspect of the leg toward the knee.

6. Does the great saphenous vein pass anterior or posterior to the medial femoral condyle?

Posterior to the medial femoral condyle.

7. What is the course of the great saphenous vein through the thigh?

It ascends along the medial thigh and curves anteriorly toward the saphenous opening near the groin.

8. Which deep vein receives the great saphenous vein?

The common femoral vein.

9. What is the saphenofemoral junction?

The junction where the great saphenous vein enters the common femoral vein.

10. Through which opening does the great saphenous vein pass before joining the femoral vein?

The saphenous opening in the fascia lata.

11. Which fascia covers the saphenous opening?

The cribriform fascia.

12. Which cutaneous nerve accompanies the great saphenous vein in the leg?

The saphenous nerve, a sensory branch of the femoral nerve.

13. Which three superficial tributaries commonly join the great saphenous vein near the groin?

The superficial epigastric, superficial circumflex iliac, and superficial external pudendal veins.

14. What is the anterior accessory great saphenous vein?

A superficial venous trunk that runs anterior to the great saphenous vein in the thigh and commonly drains near its termination.

15. What is the vein of Giacomini?

An intersaphenous venous connection between the small and great saphenous systems, usually in the posterior thigh.

16. Which vessels connect the great saphenous vein system with the deep veins of the lower limb?

Perforating veins that traverse the deep fascia.

17. What is the normal direction of blood flow through competent perforating veins?

From the superficial venous system toward the deep venous system.

18. Which structures within the great saphenous vein help prevent venous reflux?

Venous valves that normally favor proximal blood flow.

19. What is the terminal valve of the great saphenous vein?

A valve near the saphenofemoral junction that helps prevent reflux from the common femoral vein.

20. What is the main drainage territory of the great saphenous vein?

The superficial tissues of the medial foot, leg, and thigh, with additional drainage through its tributaries.

21. How does great saphenous vein valve incompetence contribute to varicose veins?

It permits venous reflux, increasing pressure and promoting dilation of superficial veins.

22. Which imaging technique is commonly used to evaluate great saphenous vein reflux?

Duplex ultrasonography.

23. What reflux duration is commonly considered abnormal in the great saphenous vein during duplex ultrasound?

Reversed flow lasting more than 0.5 seconds.

24. Why is the great saphenous vein commonly harvested for coronary artery bypass grafting?

Its length, accessibility, and suitable diameter make it useful as an autologous vascular conduit.

25. Which nerve is at risk during great saphenous vein harvesting in the medial leg?

The saphenous nerve.

26. Why is the great saphenous vein near the medial malleolus a useful site for emergency venous access?

Its superficial, relatively predictable course makes it accessible for venous cutdown.

27. What is superficial venous thrombosis of the great saphenous vein?

Thrombus formation within the great saphenous vein, sometimes accompanied by inflammation and tenderness.

28. Why is great saphenous vein thrombosis near the saphenofemoral junction clinically important?

The thrombus may extend into the common femoral vein and cause deep vein thrombosis.

29. Which minimally invasive procedures are commonly used to treat symptomatic great saphenous vein reflux?

Endovenous thermal ablation, adhesive closure, and selected ultrasound-guided foam treatments.

30. What is the principal anatomical difference between the great and small saphenous veins?

The great saphenous vein ascends medially to the femoral vein, while the small saphenous vein ascends posteriorly and usually joins the popliteal vein.