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It is bigger because it has to withstand higher pressure from the heart. Your arteries have to send oxygenated blood throughout the body, so for the heart to push the blood hard enough the artery has to be able to withstand the force.
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Answer #2
Arteries are not actually larger than veins.
By thickness an Artery is technically thicker because it has to have thicker walls in order to transport oxygenated blood at a high pressure. Veins have thinner walls(they transport the same amount of blood but at lower pressures than arteries) but are actually slightly larger in comparison to arteries in circumference.
If you were to think of them like pipes, they would be ranked from largest to smallest as:
-Vein(smaller veins are known as venules.)
-Artery(smaller arteries are known as arterioles.)
-Capillary(smallest of ALL blood transporting tubules.)
Keep in mind Veins transport un-oxygenated blood back to the lungs for re-oxygenation while arteries carry oxygenated blood to the vital organs. Capillaries are like little side streets that help feed blood to the necessary parts of your body that aren't on the main highways.
Varicose or Spider-veins are actually not veins but Capillaries that have risen up to the surface of the skin and often broken due to either trauma or pressure.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoveins
The most blood is in the Veins. Approximately 60% of the total blood volume is present in the systemic veins at any given moment. Also, at any given moment, only ~5% of the total circulating blood is flowing through the capillaries.
Source: The Vander's Human Physiology textbook (11th Edition) page 399.
Wiki User
∙ 12y agoThe largest artery in your body is the Aorta. The largest vein in the body is Vena Cava.
Wiki User
∙ 13y agoLargest veins are the superior and inferior vena cava.
The largest artery is the aorta.
Wiki User
∙ 14y agoVeins are bigger than arteries.
Wiki User
∙ 13y agoveins are thinner than arteries
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Is the arteries bigger or smaller than capillaries?
Veins are bigger (:
Which have one-way values arteries capuillaries and veins?
veins
Name three blood vessels?
the three blood vessels are the Veins capillaries Arteries the arteries.
What do arteries and veins drain?
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
Heavy walled vessels which bring blood away from the heart?
I have two questions that are almost the same and i dont know with one to answer with arteries. the arteries the arteries the arteries
Are veins and arteries an organ of the heart?
No. The heart is one organ in itself. Veins and arteries are just vessels that transport blood to and from the heart. To be specific, the veins transport the blood towards the heart, and arteries transport it away.
What is the difference between the blood in the arteries and the blood in the veins?
Veins do not pulsate Arteries pulsate Veins can easily collapse Arteries do not collapse (except in shock) Veins contain valves Blood pressure is low in the veins and higher in the arteries
What material surrounds veins and arteries?
Cellulose is what surronds veins and arteries.
What is one of the smallest blood vessels which connect the arteries and the veins is a?
The capillaries are the smallest blood vessels and are usually found between arteries and veins.
Which one of these is closest to every cell of your body the skin capillaries arteries or veins?
veins
When you cut yourself, where does the blood come from?
Depends, how deep. On the skin surface you are looking at capillaries and small veins. Past the skin, you are looking at bigger veins and arteries.
What is the difference between muscle in veins and arteries?
Thee difference between muscle in veins and arteries is that muscles of arteries are thicker compared to those of veins.
