Grandparents have always been important. Today, they're even more important. In busy, two-career and single-parent families, an involved grandparent goes a long way to filling a void for children. In extreme situations, the courts have found it's often a grandparent who can reach a troubled teen when no one else can.
Here's how to enlarge your veins and arteries for plasma donation: 1  Heat up your arm. When veins become overheated, they expand, and draw closer to the skin. 2  Hold off on drinking and smoking. Both smoking and drinking alcoholic beverages makes veins and arteries smaller and harder. 3  Hold off on the caffeine.
When valves are incompetent in the superficial veins only, the deep veins have to carry more blood towards the heart. To compensate, the veins expand and the valves may not close properly. When this happens, such as in the case of severe varicose veins, the deep vein system may also become incompetent. When blood is no longer pumped effectively from the lower leg, the peripheral veins will not be emptied even when walking.