So it will pump blood through the heart.
The heart pumps it. When your heart beats it squeezes blood in the heart into the arteries and from the arteries to the veins and from the veins back into the heart.
Veins carry deoxygenated blood back the heart.
Blood flows away from the heart in arteries, and towards the heart in veins.
Veins are thin. They carry blood to the heart and brain.
The blood returns to the heart through veins.
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
Veins
Veins are blood vessels that carry blood toward the heart.
The actions or forces that allow blood in the veins to return to the heart is that the blood in the veins is moving through the veins at a lower pressure, so the valves and muscular pumps withing the body help the blood circulate back to the heart.
veins, maybe
Veins. Veins carry unoxygenated blood towards the heart.
The heart chambers are not called arteries and veins. Heart chambers are atria and ventricles.