Saturday, October 24, 2009

Give of differences between arterics & veins.?

the spelling obviously.
Artery - a blood vessel that carries blood away from the heart.Vein - a blood vessel that conveys blood from tissues back to the heart.
arteries carrie blood away from the heart, veins return blood to the heart, except for in the lungs, the pulmonary vein takes blood from the heart, and the the pulmonary artery returns it, so that it can take oxygeyn to the blood
1. carry blood away from heart.
2. have walls are thick and muscular
3. have small lumen
4. have no valves.
5. blood flows with jerks.
6. flow of blood is fast
7. except pulmonary artery all carry oxygenated blood.Veins:
1. carry blood towards the heart.
2. have thin and non muscular walls.
3. have larger lumen.
4. have valves to check back flow of blood.
5. blood flows smoothly.
6. flow of blood is not so fast
7. except pulmonary vein all carry deoxygenated blood
Well assuming that you meant arteries instead of arterics ,,,,,, Arteries are major corridors for the transference of blood through out the body from the heart ,,,, Blood vessels ,, veins and capillaries are minor and smaller corridors that branch off of the arteries and go to specific parts of the body ,,,, Yoda said that
The Oxford Dictionary of Current English, 3rd Edition defines them this way: (1) arteries- "any of the tubes through which blood flows from the heart around the body." (2) veins-"any of the tubes forming part of the circulation system by which blood is carried from all parts of the body towards the heart."
carry blood away from heart, have walls are thick and muscular, have small lumen, have no valves, blood flows with jerks, flow of blood is fast, except pulmonary artery all carry oxygenated blood.Veins:
carry blood towards the heart, have thin and non muscular walls, have larger lumen, have valves to check back flow of blood, blood flows smoothly, flow of blood is not so fast, except pulmonary vein all carry deoxygenated blood
In a general sense, a vessel is defined as a hollow utensil for carrying something: a cup, a bucket, a tube. Blood vessels, then, are hollow utensils for carrying blood. Located throughout your body, your blood vessels are hollow tubes that circulate your blood.
There are three varieties of blood vessels: arteries, veins, and capillaries. During blood circulation, the arteries carry blood away from the heart. The capillaries connect the arteries to veins. Finally, the veins carry the blood back to the heart. If you took all of the blood vessels out of an average child, and laid them out in one line, the line would be over 60,000 miles long! An adult's vessels would be closer to 100,000 miles long! Besides circulating blood, the blood vessels provide two important means of measuring vital health statistics: pulse and blood pressure. We measure heart rate, or pulse, by touching an artery. The rhythmic contraction of the artery keeps pace with the beat of the heart. Since an artery is near the surface of the skin, while the heart is deeply protected, we can easily touch the artery and get an accurate measure of the heart's pulse. When we measure blood pressure, we use the blood flowing through the arteries because it has a higher pressure than the blood in the veins. Your blood pressure is measured using two numbers. The first number, which is higher, is taken when the heart beats during the systole phase. The second number is taken when the heart relaxes during the diastole phase. Those two numbers stand for millimeters. A column of mercury rises and falls with the beat of the heart. The height of the column is measured in millimeters. Normal blood pressure ranges from 110 to 150 millimeters (as the heart beats) over 60 to 80 millimeters (as the heart relaxes). It is normal for your blood pressure to increase when you are exercising and to decrease when you are sleeping. If your blood pressure stays too high or too low, however, you may be at risk of heart disease. Arteries are tough, elastic tubes that carry blood away from the heart. As the arteries move away from the heart, they divide into smaller vessels. The largest arteries are about as thick as a thumb. The smallest arteries are thinner than hair. These thinner arteries are called arterioles. Arteries carry bright red blood! The color comes from the oxygen that it carries.Veins carry the blood to the heart. The smallest veins, also called venules, are very thin. They join larger veins that open into the heart. The veins carry dark red blood that doesn't have much oxygen. Veins have thin walls. They don't need to be as strong as the arteries because as blood is returned to the heart, it is under less pressure.
arteries carry oxygenated blood FROM the heart. veins carry blood back to the heart
The artery carries oxygen rich blood from the heart to the cells to feed them. The veins take the waste from the cells to the kidneys and liver and then back to the heart.
arteries lead the blood out of the heart, they are more profound, harder to puncture, elastic walls that reacts to changes in presurre to keep a constant blood flow. they don't dilate easily, blood flow in the arteries below the heart is easier because is aided by gravitation.
veins can dilate very much, in the legs they can cause varicous legs. they can be punctured for therapeutic reasons, because they are superficial. they lead the blood back to the heart.
Arteries carry blood away from the heart and veins carry blood to the heart. generally arteries have thicker more muscular walls than veins.

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