why are arteries thicker than veins...both are under equal pressure near heart right?

Question

anonymous · Answer

no they are not. arterial pressure is around 120/80 (systole diastole) . venous pressure is 0-5, even near the heart. the valves in the heart - and specfically the tricuspid between the right atrium and right room enable the buildup of pressure when the chamber contracts

blues · Answer

What Ttom said about the pressure difference.

And arteries are thicker than veins because they need to withstand the higher blood pressure.

anonymous · Answer

cuz the blood flowing through them is at higher pressure there fore they need tobe thicker to withstand more pressure.