Question

What vein skips the inferior vena cava and drains in the superior vena cava?

Answer 1

The vein that bypasses the inferior vena cava and drains into the superior vena cava is not expressly identified, but could be alluded to veins like the vertebral veins that drain directly into the brachiocephalic veins or superior vena cava.

Step-by-step explanation:

The vein that skips the inferior vena cava and drains into the superior vena cava is not clearly stated in traditional anatomical terms. However, according to the provided information, the superior vena cava drains blood from regions above the diaphragm, such as the head, neck, upper limbs, and thoracic region. It receives blood from the brachiocephalic veins, which are formed by the fusion of the subclavian veins and the jugular veins.

Therefore, in terms of veins skipping the inferior vena cava, any veins that drain directly into the brachiocephalic veins or superior vena cava itself, such as the azygos vein or vertebral veins, would fulfill this criterion as they do not contribute to blood flow toward the inferior vena cava.

Answer 2

Suprarenal veins drain into the inferior veins cabs directly. By contrast all the lumbar veins and hepatic veins usually drain directly into the inferior vena cava