Do Arteries Have Thick Muscular Walls. Their walls contain larger number of smooth muscles. Because of the increased arterial pressure.
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Similar structure to arteries except they aren't composed of so much muscular walls. Smooth muscle contractions are involuntary movements triggered by impulses that travel through the autonomic. This walls with smooth muscle and.
Their role is to prevent blood from flowing the sinoatrial node is another very important part of the heart.
Thus arteriole walls are much thinner than those of arteries. The walls are also elastic so that they can stretch and recoil, helping to push blood along the artery in spurts. Arteries have thick muscular walls to withstand the high pressure of the blood being pumped out of the heart. Have thick muscular and elastic walls to pump and accommodate blood.
