Arteries need thicker walls to prevent the arteries from collapsing.
Why Are Artery Walls Thicker Than Vein Walls. Arteries have more smooth muscle in their walls than veins to accommodate the pulses of blood generated by each contraction of the heart. The returning blood in the veins is under low(er) pressure.
Is it disadvantageous that arteries are much thicker than ... from qph.fs.quoracdn.net
Arteries and veins have a similar wall structure. Then blood pressure is progressively lower and lower until it reac. The walls of the arteries and veins are thicker than those of the capillaries.
The walls contain a membrane that includes a number of thin epithelial cells, which are bound (связаны) together at their edges.
To withstand the pressure of the blood coming out from the heart, arteries need thick walls. Ventricles pump blood into various organs and the pressure of blood flowing in them is more than that of articles. Because arteries are closer to the pumping action of the heart, their walls must be strong enough to take the charges in pressure. They have an outer layer called the tunica adventitia or externa, a middle layer called the tunica media arteries are round with thick muscular walls.