Write the differences between veins and artery.

Artery

Veins

1. Arteries carry blood from the heart to the body organs.

1. Veins carry blood from body organs to the heart.

2. Arteries have thick walls.

2. Veins have comparatively thin walls.

3. Blood flows with a force in the arteries.

3. Blood flow is very slow and without any force.

4. There are no valves in the arteries.

4. Veins have valves which allow the flow of blood in one direction only and check and back flow.