Which pair of veins unite to form the brachiocephalic vein?

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Multiple Choice

Which pair of veins unite to form the brachiocephalic vein?

Explanation:
Each side of the neck has a brachiocephalic vein formed where the internal jugular vein joins the subclavian vein behind the sternoclavicular joint. The right and left brachiocephalic veins then merge to create the superior vena cava. So the pair that forms the brachiocephalic vein is the subclavian vein and the internal jugular vein. The external jugular vein drains into deeper veins rather than forming a brachiocephalic vein, and the brachial (arm) veins do not join the internal jugular to form this vessel.

Each side of the neck has a brachiocephalic vein formed where the internal jugular vein joins the subclavian vein behind the sternoclavicular joint. The right and left brachiocephalic veins then merge to create the superior vena cava. So the pair that forms the brachiocephalic vein is the subclavian vein and the internal jugular vein. The external jugular vein drains into deeper veins rather than forming a brachiocephalic vein, and the brachial (arm) veins do not join the internal jugular to form this vessel.

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