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.
Some people, genetically, are born with weaker or smaller veins than others - and some people are born with larger, and more flexible vein tissues. Due to genetics, some people just have poor, weak veins. This only affects the large return veins you can see however - the veins which transport the rest of your blood are likely fine. Regardless of the vein size, blood can still be drawn. I personally have smaller and weaker veins, and can still donate, but sometimes it takes a few tries.
Because veins are carrying oxygen-poor blood back to the heart they have a much less strong blood pressure than arteries that carry blood from the heart. Arteries have to have thicker walls because of the greater pressure on them.So it is easier to use veins, and less dangerous.f someone were to try to draw blood from one of your arteries, it would literally squirt out every time your heart beats. Plus, arteries are typically deeper within your body than veins (veins are much easier to get to when taking blood). Source(s): Nursing major.