Question

what is oxygenated and deoxygenated blood ?How y arteries and veins related to these?why have veins valve init ...... Please help me​

Answer 1

Answer:

Explanation:

Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart. Veins are less muscular than arteries and are often closer to the skin.

Answer 2

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The right side pumps deoxygenated blood (low in oxygen and high in carbon dioxide) to the lungs. Oxygenated blood leaves the lung via the pulmonary vein. Blood enters the left atrium. Blood moves into the left ventricle. Blood is pumped into the aorta, which carries oxygenated blood around the body.

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They work together to transport blood throughout the body, helping to oxygenate and remove waste from every cell with each heartbeat. Arteries carry oxygenated blood from the heart, while veins carry oxygen-depleted blood back to the heart.

$\purple{Valve}$

Unlike arteries, veins contain valves that ensure blood flows in only one direction. But, Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction. Valves also help blood travel back to the heart against the force of gravity.

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