Cardiovascular Health

Why are the walls of arteries proportionately thicker then veins?


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2010-02-24 00:21:28
2010-02-24 00:21:28

In general, the walls of arteries are thicker than those of veins. The tunic media in particular tends to be much heavier and contains substantially more smooth muscle and elastic tissue. This anatomical difference reflects a functional diffeerence in the 2 types of vessels. Arteries, which are closer to the pumping action of the heart, must be able to expand as an increased volume of blood flows off into the circulation during diastole. Their walls much be sufficiently stong and resilient to withstand such pressure fluctuations.

The tunica media is thicker in the arteries mainly for maintaing blood pressure and continuous blood circulation.


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The walls of the arteries are much thicker than the walls of the corresponding veins. The arteries have thicker walls due to the arteries taking the direct pressure of blood from the pumping heart.

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The walls of arteries are thicker than the walls of the veins.

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walls of veins are always thinner than those of arteries

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The walls of arteries are thicker than those of veins so as to keep the pressure of the blood constant while the arteries are constricting or relaxing. Also, the blood pressure in arteries is higher than that in veins, so the walls are thicker to handle the added pressure.

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The more pressure it uses, the thicker the walls will be. Veins have very low pressure which means they have thin walls and vice/versa for arteries which have a higher pressure and thicker walls than veins.

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