Question

Which body part bring o2 rich blood from lungs to heart?

Answer 1

I think the answer is veins, because they only transport blood.
And that veins are called arteries.

Answer 2

The carbon dioxide rich blood is transported to the lungs through the left ventricle with the help of the pulmonary artery to get purified then the blood is purifies and it sent to the left atrium through the pulmonary artery