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Arteries are adapted to their function in blood transport from the heart.
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| Submitted: Fri Sep 19 2003
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Arteries are adapted to their function in blood transport from the heart Arteries are tubular vessels that carry blood from the heart to the rest of the body. Arteries have a very thick lining; the outer lining is made from collagen fibres and elastic tissue. This is there because it helps the arteries expand under the high pressure that the blood is forced out from the heart. The second layer is made from thick smooth muscle. This is there so when the arteries expand the muscle can contract when this happens it pushes the blood along the vessel in a smooth regular fashion. This is called a pulse. The arteries do not need valves; this is because the blood is being pumped at such a high pressure and the fact that the muscle contracts to stop the blood going back along the artery. The inner lining is made from epithelium cells....
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