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The difference between arteries and veins reflects their rules in the circulatory system. The primary differences between arteries and veins according to their structure, functions and direction of blood flow are: 1-Arteries have thicker walls and smaller lumen compared to veins. 2-Veins have valves to prevent returning blood, while arteries don’t have. 3- Arteries generally carry oxygenated blood away from the heart to the organs and tissues, while veins carry deoxygenated blood back to the heart from the organs and tissues. 3- Arteries operate under high pressure, while veins operate under low pressure. 4- Arteries are located deeper within the body compared with veins. 5- additionally there are different diseases impact each of them.
The heart is consistent with four chambers; the right, and the left atrium (upper chambers), the right, and the left ventricular (lower chambers). Each chamber has a specific role in the circulatory system. The right atrium receives the deoxygenated blood from the body through cava inferior and cava superior vines. The right ventricle pumps the deoxygenated blood to the lungs for oxygenation through the pulmonary artery. The left atrium receives the oxygenated blood from the lungs through the pulmonary vein. The left ventricle pumps the oxygenated blood to all organs and tissues, including the heart. So the chambers separate between oxygenated and deoxygenated blood and the ventricles are muscular chambers that generate high pressure to pump blood effectively to entire body.
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