<h3>Difference Between Artery and Vein
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</h3><h3>Artery
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</h3><h3>1. Vessels which carry blood from the heart to various body parts </h3><h3>2. Arteries carry oxygenated blood from the heart except pulmonary artery </h3><h3>3. Arteries have thick elastic muscular walls </h3><h3>4. Valves are absent </h3><h3>5. Blood flows under high pressure </h3><h3>Vein </h3><h3>1. Vessels which carry blood from the various body parts to the heart </h3><h3>2. Veins carry deoxygenated blood from the various body parts except pulmonary vein </h3><h3>3. Veins have thin non elastic walls </h3><h3>4. Valves are present to prevent the backward flow of blood </h3><h3>5. Blood flows under low pressure </h3>
Social science, any branch of academic study or science that deals with sociology, psychology, political science, and economics. Most historians, however, consider history as one of the humanities.