What do arteries do
The main duty of the arteries is to transport blood from the heart to body organs. Most arteries transport blood with oxygen and nutrient-rich to the tissues and organs. However, pulmonary arteries usually transport de-oxygenated blood to lungs. Read more from http://www.ehow.com/about_4779407_function-arteries-within-cardiovascular-system.html#ixzz266bcHiUu.
Circulate blood from and to the heart. The veins spread out from the arteries.
They are the passage ways for your blood to flow to all the parts of your body.