Blood vessel

The blood vessel is an tubular channel which is deemed as elastic and these channels are dispersed around the body to deliver blood via veins, arteries and capillaries.http://www.thefreedictionary.com/blood+vessel (visited 19/10/2015)

Arteries carry blood from the heart and are classed as being elastic channels they carry oxygenated blood to vital organs around the bodyhttp://biology.about.com/od/humananatomybiology/ss/blood_vessels.htm (visited 19/10/15)

Veins Carry blood to the heart from vital organs and the blood is now deoxygenated and therefore needs to be re-oxygenated by the heart these two are deemed as elastic vessels http://biology.about.com/od/humananatomybiology/ss/blood_vessels.htm (visited 19/10/15)

Capillaries are tiny blood vessels that carry oxygenated and deoxygenated blood from veins and arteries to vital organs and due to the vast majority of them they are deemed to have a surface area http://biology.about.com/od/humananatomybiology/ss/blood_vessels.htm (visited 19/10/15)