Does blood enter the heart through the superior or inferior vena cava?

or both?
Answers:
Both
Through both. The superior vena cava drains the part of the body cranial to the heart, and the inferior vena cava drains the part of the body caudal to the heart. They both enter the right atrium.
Both.
Both. They both enter the right AURICLE.
I don't know, i lost my heart certification point...........

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