What is the superior vena cava?
The large upper-body vein is called the superior vena cava. Gray's Anatomy (1918) describes it as a large vein that drains blood from the head, neck, arms, and upper chest.
What it is
- A large vein that drains blood from the head, neck, arms, and upper chest.
- Formed by the union of the two brachiocephalic veins.
- Empties into the right atrium of the heart.
Where it is
- In the upper right of the chest, behind the sternum.
- Passes downward to enter the right atrium.
- Lies alongside the ascending aorta.
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Last verified: 2026-07-18
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