I am a tube. I carry blood to the left Atrium. What am I?

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Answer 1 · 2016-03-11T11:31:02

You are a Pulmonary Vein.

Diagram showing blood flow through the heart :

![en.wikipedia.org]( useruploads.socratic.org )

Here we can see, blood is carried to the left atrium by 4 pulmonary veins from the lungs.