A heart attack occurs when the blood flow that carries oxygen to the heart is blocked.

These are the arteries that carry blood to the heart itself.

Healthy veins carry blood to the heart through a series of one-way valves.

Then, the blood is carried to the heart by veins and lymph vessels.

The lungs transfer oxygen to the blood, which is carried to the heart for distribution throughout the rest of the body.

They watch yellow and orange conveyors flow through it like veins carrying car parts to the heart of the assembly line.

In people who smoke, the arteries that carry blood to the heart become narrowed over time.

We will carry terror to the inmost heart of Spain.

But these allies would not be enough to carry the attack to the heart of the goddess's strength.

He ordered a stress test to look for blockages in the arteries that carry blood to the heart.