Question

Differentiate arteries and veins?

Answer 1

Arteries

1-They carry blood away from the heart for distribution to the body.

2-They contain aerated blood, except the pulmonary artery.

3-The flow of blood is intermittent and fast due to heart beats.

4-Their blood has considerable pressure.

5-They have thick, elastic walls and narrow lumen.

6-They are deep-seated.

7-They have no valves in them.

8-They become empty after the death of animal.

9-When they are empty or cut across, they retain their tubular form.

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Veins

1-Veins bring blood from the body back to the heart.

2-They contain nonaerated blood, except the pulmonary vein.

3-The flow of blood is slow and steady

4-Their blood has low pressure.

5-They have thinner, scarcely elastic walls and wide lumen.

6-They are superficial.

7-They have valves to prevent back flow of blood and to counteract gravity.

8-They contain blood even after death of the animal.

9-When they are empty or cut across, they collapse.

Answer 2

$\boxed{Arteries}$

⏩It carry blood away from the heart to various organs of the body.

⏩ It have thick and elastic walls.

⏩ It doesn't have valves.

$\boxed{Veins}$

⏩ It collect blood from different organs and bring it back to heart.

⏩ It doesn't have thick and elastic walls.

⏩ It have valves to ensure that the blood flows only in one direction.

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