Which vein empties deoxygenated blood into the right atrium?
A) external jugular vein
B) brachiocephalic vein
C) superior vena cava
D) subclavian vein
C
Explanation:
A) The external jugular vein does not empty blood into the heart.
B) The brachiocephalic vein does not empty blood into the heart.
D) The subclavian vein does not empty blood into the heart.
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