A. Lateral thoracic vein
B. Internal thoracic vein
C. Hemiazygos vein
D. Vertebral venous plexus
Ans;D. Vertebral venous plexus
This structure is Superior vanacava
The vertebral venous plexus is a highly anastomotic network of valveless veins running along the entire length of the vertebral column from the foramen magnum to the sacral hiatus.
The vertebral venous plexus is comprised of three interconnected divisions:
- internal vertebral venous plexus
- external vertebral venous plexus
- basivertebral veins
The internal vertebral venous plexuses and external vertebral venous plexuses communicate with one another via the intervertebral veins, which run through the intervertebral foramina.