Maintaining blood pressure.
No, veins have the valves, arteries don't.
Blood flows away from the heart and is measured as blood pressure. This is a measure of the passage or flow and the resistance of the flow in the arteries.
blood pressure
blood pressure
Blood pressure
Your heartbeat
There isnt exactly specific arterioles because every conduction system of Arteries flow from Elastic arteries -> muscular arteries -> arterioles. Arterioles are the smallest of the arteries and produce the greatest vascular resistance of blood. The blood then passes onto capillaries for gas/waste/nutrient exchange.
Blood flow is faster in arteries than in veins. Blood flow in veins is lower pressure.
Arteries are larger and have more power from the heart therefore arterial bleeding is more profuse than bleeding from a vein.
Clots may form in theses narrowed arteries and block blood flow high blood cholesterol levels can cause hardening of the arteries at a younger age.
white blood cells(wbc)
Arteries flow away from the heart. That's a technical answer. Some blood tubes that look like arteries flow into the heat to nourish it. Of interest is the pulmonary artery, the only artery to carry un-oxygenated blood. It carries blood to the lungs where it is oxygenated.