Can some one please help me.........Why do the arteries and veins travel together?

Question

Can some one please help me.........Why do the arteries and veins travel together?

Answer 1

Actually, not all veins travel with arteries..there are superficial veins and deep veins. Deep veins are those group of veins which follow the course of arteries and transport "used blood" back to the heart and lungs. Superficial veins are those that can be seen easily on our skin because it is right beneath it.

Answer 2

The previous posters are both correct.  Anywhere an artery goes, a vein needs to go too--but that's a general statement.  They don't need to travel right next to each other and often they don't.  The arterial system carries blood away from the heart, and the venous system carries it back--that is the constant.  There are even variations in both systems that you see from human to human sometimes--there are general rules but sometimes things develop oddly.

As the systems spread out and get more towards the periphery, they become much more finely-divided and we no longer try to give them all names.  But their purpose stays the same--to deliver oxygen-laden blood to the whole body, and to carry that blood back to the heart and lungs (to refill on oxygen) or to the liver and kidneys (to dispose of waste products).  So you always need both, in some form, for every area.

Answer 3

Because they are opposing parts of the same system - circulatory.

While arteries carry oxygen and nutrients to the extreme parts of your body, veins take away waste products to be filtered by the kidneys.