Question

difference between arteries and veins class 7​

Answer 1

vein. Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.

Answer 2

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$\large \sf \underline{ \blue{ Arteries : - }}$

• They carry oxygenated blood (pure blood) from the heart.

• Valves are absent in arteries.

• They have thick elastic walls and are deep seated.

• Pulmonary artery is the only artery which carries deoxygenated blood [impure blood] from the heart to the lungs.

$\large \sf \underline{ \blue{ Veins : - }}$

• They carry deoxygenated blood (impure blood) to the heart from different parts of the body.

• They contain valves which allows the blood to flow in one direction only.

• They have thinner walls, as compared to arteries.

• Pulmonary vein is the only vein which carries oxygenated blood [impure blood] from the lungs to the heart.

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❍ Blood vessels are of three types :

• Arteries : They carry pure blood from the heart.

• Veins : They transport impure blood from different parts of the body to the heart.

• Capillaries : They are the thin blood vessels which attaches arteries to the veins.