Lesson Summary. Veins are an important part of our circulatory system. They are responsible for returning deoxygenated blood back to the heart after arteries carry blood out. The vena cava is the largest vein in the body. Veins have much thinner walls than arteries. Because the pressure within them is low, veins have valves inside them to keep blood flowing only one way. This ensures a successful return of blood to the heart, where the cycle begins all over again.
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Veins can vary greatly in size. The largest vein in the body is called the vena cava, which is Latin for 'hollow vein.' There are two sections of the vena cava, one below the heart and one above it.
http://study.com/academy/lesson/what-are-veins-functions-lesson-quiz.html
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cappillaries == The smallest veins in the body are the venules. Capillaries join venules and arterioles (the smallest arteries) together. Arteries carry the blood from the hea … rt around the whole body; while veins carry the blood back to the heart.
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Rating Newest Oldest. Best Answer: If you play your cards right, mine will be one of them. HAHAHAHAHAHA,. Seriously, the two largest veins in your body are the inferior vena cava and the superior vena cava. My weiner comes a close third.
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Hywel Vaughan. answered on 25 Jun 2010: Hi wildrosa, The biggest vein in the body is the ‘inferior vena cava’ – this is the vein that returns the blood from the bottom of your body to your heart. The blood is de-oxygenated, and enters the right atrium of your heart – this is at the lower right, back side of your heart.
http://boronj10.imascientist.org.uk/2010/06/what-is-the-biggest-vain-in-the-body
So, the biggest vein from the body going back into the heart is probably the last one … except that there are two “last ones”, the superior and inferior vena cavae. However, because there is more blood flow from the lower parts of the body, I’d suppose that its going to be the inferior vena cava.
http://boronj10.imascientist.org.uk/2010/06/what-is-the-biggest-vain-in-the-body
Interesting. First, lets think about the fattest (widest) vein: Veins tend to get bigger as they get closer to the heart (because they’re draining blood from more places, so need to be able to cope with bigger flows.
http://boronj10.imascientist.org.uk/2010/06/what-is-the-biggest-vain-in-the-body
The veins are found in all parts of our body. Some of the largest veins are the superior and inferior vena cava which are the last channels before oxygen-depleted blood reaches the heart. The jugular is the main vein that brings blood back from the brain.
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what is the body's largest veins
The largest veins of body is the vena cava. Vena cava is the body's largest veins.