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.
Briefly explain why veins are called blood reservoirs and state where in the body venous blood reservoirs. are most abundant. Briefly explain why blood flow in large, thick-walled arteries, such as the aorta and its branches, is fairly.continuous and does not stop when the heart relaxes.lood flows from high to low pressure. Hence, it flows from the high-pressure arteries through the capillaries and. then through the low-pressure veins. Because blood pressure contributes less to blood propulsion in veins, special. measures are required to ensure that venous return equals cardiac output.