What blood vessel takes from the cells back to heart?

The blood vessel that takes blood from the cells back to the heart is called a vein. Veins are part of the circulatory system and are responsible for carrying deoxygenated blood back to the heart, where it can be pumped to the lungs for oxygenation. Veins have thinner walls and lower blood pressure compared to arteries, which carry oxygenated blood away from the heart to the rest of the body.