Basivertebral Veins Flashcards

Explore the basivertebral veins, their intraosseous course, vertebral venous connections, drainage patterns, and clinical significance.

Card 1 of 21Question

What are the basivertebral veins?

Valveless intraosseous veins that drain blood from the vertebral bodies.

In This Section

1. What are the basivertebral veins?

Valveless intraosseous veins that drain blood from the vertebral bodies.

2. Where are the basivertebral veins located?

Within the cancellous bone of vertebral bodies.

3. From which vascular structures do the basivertebral veins collect blood?

Venous sinusoids within the vertebral body marrow.

4. What is the general course of the basivertebral veins?

They pass approximately horizontally through the vertebral bodies toward their surfaces.

5. Through which part of a vertebral body do the basivertebral veins commonly emerge posteriorly?

The basivertebral foramen on the posterior surface of the vertebral body.

6. Which venous plexus receives the principal posterior drainage of the basivertebral veins?

The anterior internal vertebral venous plexus.

7. Which venous plexus communicates with the basivertebral veins anterior to the vertebral bodies?

The anterior external vertebral venous plexus.

8. Where is the anterior internal vertebral venous plexus located?

Within the spinal epidural space, along the posterior surfaces of vertebral bodies.

9. What major ligament lies near the posterior openings of the basivertebral veins?

The posterior longitudinal ligament.

10. To which larger venous network do the basivertebral veins belong?

The vertebral venous system, commonly called Batson's plexus.

11. Do the basivertebral veins contain functional venous valves?

No. They are valveless.

12. What effect does the absence of valves have on basivertebral venous flow?

Blood can flow in either direction according to local pressure gradients.

13. Which veins connect the internal vertebral venous plexus to regional systemic veins?

The intervertebral veins.

14. Which systemic veins receive vertebral venous drainage in the thoracic region?

The posterior intercostal veins and the azygos venous system.

15. Which systemic veins receive vertebral venous drainage in the lumbar region?

The lumbar and ascending lumbar veins.

16. How can increased intra-abdominal pressure affect blood flow through the basivertebral veins?

It can alter venous pressure gradients and produce temporary reverse flow.

17. Why are basivertebral veins clinically important in vertebral metastasis?

Their valveless connections provide a potential pathway for tumor cells to reach vertebral marrow.

18. Which pelvic malignancy is classically associated with spread to the vertebral column through vertebral venous connections?

Prostate carcinoma.

19. Why can basivertebral veins be a source of bleeding during vertebral body surgery?

Their thin-walled venous channels traverse cancellous bone and may be opened during bone removal.

20. What radiological feature may indicate the normal course of basivertebral veins within a vertebral body?

A central intraosseous vascular channel extending toward the posterior vertebral body.

21. What anatomical feature allows basivertebral veins to contribute to collateral venous drainage?

Their connections with the internal and external vertebral venous plexuses.