Why Veins Become Prominent After Tourniquet Release: An Explanation

When a tourniquet is applied, it creates pressure on the veins, causing them to collapse and preventing blood from flowing back to the heart. This can make it difficult to see the veins, as they may be obscured by the pressure. However, once the tourniquet is released, the pressure is relieved and the veins can fill with blood again, causing them to become prominent and visible.