Question

If blood flows in close circulation in veins and arteries then why we get blood out from anywhere we cut our body. Are veins and arteries present everywhere in my skin?

Answer 1

That would be because blood doesn’t only flow through veins and arteries. There are smaller vessels too, some too small to see with the naked eye - most are less that 1/100th of a millimetre across! These minute vessels, called capillaries, along with tiny veins and arteries (arterioles and venules) are the site of most of the bleeding you see in minor wounds.