★ Circulatory System Quiz
The main vein(s) that brings blood to the right atrium?
A. Aorta
B. Pulmonary veins
C. Superior and Inferior vena cava
D. Jugular vein
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Which 2 chambers of the heard contain oxygen-rich blood?
A. Left Atrium and Left Ventricle
B. Right Atrium and Right Ventricle
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