Arteries have the most thick and elastic walls causing them to have a smaller lumen. They have the most thick walls because they have to withstand the high amounts of pressure as they carry oxygenated blood. This is the reason they have no valves as their is no chance of back flow of blood unlike veins.
veins
Arteries!
The "type" of blood vessel is an artery.The largest, an elastic one connected to the heart, is the aorta.
Because it has to face the Total Peripheral resistance that is created by the arterioles, and overcome that resistance to pump blood.
An elastic tubular channel, such as: * An artery * A vein * A capillary
Arteries in general have the thickest layer of muscle and elastic, in order to cope with the high pressure. To be more specific, the aorta (the largest artery in the body) has the largest layer, because it is dealing with very high pressure, greater than that in any other blood vessel.
The tunica media is the middle layer of the wall of a blood vessel. It is made up of smooth muscle cells and sheets of elastic tissue that help regulate blood flow in the body by causing the blood vessel to narrow or widen.
Windkessel, they moderate the changes in pressure between systole and diastole
An artery is a vessel with a thick medial layer, consisting of smooth muscle to allow for constriction or dilation in order to control blood flow through the vessel.
The capillaries are the only blood vessels without elastic tissue. This is so that the vessel walls are as thin as possible to reduce the diffusion distance (for gases and waste products). Veins do contain a layer of elastic tissue is their walls, but this is a very thin layer (when compared to arteries).
In all but one case, that would be an artery. The exception is the pulmonary vein.
Arteries carry blood containing oygen and nutrients away from the heart. They are thick walled and elastic to cope with the pressure exerted by the contraction of the heart.