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You are watching: The blood vessels to the lungs and back are collectively known as the

National center for Biotechnology details (US). Genes and condition . Bethesda (MD): National center for Biotechnology details (US); 1998-.


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Oxygen is vital to life as it gives fuel for every the body"s functions. The heart"s role is to pump oxygen-rich blood come every cell in the body. The blood ship — a network of interconnecting arteries, arterioles, capillaries, venules, and veins — administer the pathway in i m sorry blood travels.

Arteries are the passageways through which the blood is delivered, the largest of i m sorry is the aorta. The aorta branches off the heart and divides into numerous smaller arteries, which have actually muscular walls that change their diameter to rise or decrease blood flow to a particular body area. Capillaries room thin walled, very branched vessels the feed the tissues and collect wastes to be carried back to the lungs, liver, or kidney for elimination. Capillaries empty right into the venules, which in turn drain into the veins that lead earlier to the heart. Veins bring deoxygenated blood come the lungs to choose up an ext oxygen, and also then ago to the heart once again.

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The 4 most common species of vascular condition are high blood pressure, coronary heart disease, stroke, and rheumatic love disease. Other forms encompass arrhythmias, conditions of the arteries, arterioles and capillaries, congenital defects, valvular heart disease, conditions of pulmonary circulation; and diseases the veins and also lymphatics. Some of these disorders space the an outcome of the over manufacturing of blood ship cells, when others occur from vascular malformations. Still others an outcome from inflammation the the blood ship or the develop up the a fat substance called plaque in ~ the blood vessels.