What do veins do?

Veins carry blood back to the heart. Blood flows from the body's tissues and organs, through the veins, and back to the heart where it can be pumped to the lungs to receive oxygen and release carbon dioxide. Veins are equipped with one-way valves that help to ensure that the blood flows in the correct direction, towards the heart. They also help to pump blood back to the heart by contracting and relaxing the walls of the vessels.

The blood in the veins is typically low in oxygen and high in carbon dioxide, as it has already passed through the body's tissues and is on its way back to the lungs and heart to be re-oxygenated and re-circulated.

Veins play a crucial role in maintaining the circulatory system and in providing oxygen and other nutrients to the body's cells. When veins are not working properly, it can lead to various vein-related health issues.

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