Is the large vein that drains the head, shoulders, and empties the blood into the right atrium the portal vein, the subclavian vein, the superior vena cava, or the jugular vein?

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Answer 1 · 2016-08-01T06:51:10

The answer should be Superior Vena Cava.

Jugular vein drains from the head, face, and neck. Subclavian vein drains from the shoulder.

Both join to form the Brachiocephalic vein. Two such vessels from two sides meet to form Superior Vena Cava.

Portal vein drains into the liver.