Question

We often see blood vessel on the outside of the hand of the old man are those artery or vein

Answer 1

Blood vessels visible outside our hand are veins.

Answer 2

The blood vessel which are observed on the outside of the hand of the old man are vein, because veins are located superficially in the extermities,while arteries are present very deep and arteries have higher pressure, so puncture site more likely to bleed if pressure not applied till bleed stops.