blood a pump (the heart) to push the blood around the body a system of tubes to contain the blood (arteries, veins and capillaries) The blood is the transport medium – it carries substances to ...

Laid end-to-end, an adult's arteries, veins and capillaries would stretch for about 100,000 miles - enough to wrap around the world nearly four times. Each 2.54 square centimetre (a square inch ...

Each square inch of human skin consists of 6m (20ft) of blood vessels. Veins hold about 65 pc of the body's blood and have one-way valves to help blood move. Capillaries, which carry blood to our ...

Vasculitis is an autoimmune disorder that causes inflammation of the blood vessels. It can affect arteries, veins, and capillaries. This condition causes blood vessel walls to swell, which restricts ...