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Have thinner walls.
Venules, they are smaller and thinner than veins.
Arteries have thicker wall because the pressure in the arteries is much higher.
Yes
Yes, that is correct.
The arterial walls are thicker because they need to withstand the pressure coming from the heart.
Most veins are thinner walled tubes than arteries, and basically transport blood towards the heart.
Arteries have thicker walls than veins because they are carrying blood away from the heart and so, in a sense, are working harder. Veins have thinner walls and contain valves to stop blood flowing backwards.
Capillaries are thin tubes connected to your veins and arteries that transfer the blood from the arteries to the veins. Capillaries are so thin, they are thinner than one piece of hair. They are one cell thick.
Capillaries are smaller, thinner and have less surface area than veins. Veins take blood to the heart, and capillaries are the thin tubes that connect the veins and arteries together.
Veins have thinner walls compared to arteries. They also have larger lumens than arteries which is the space inside the vessel. Lastly they have one-way valves to help keep the blood flowing in one direction.
Arteries have thick elastic walls that can expand and contract, because they carry blood pumped from the heart. Veins return the blood to the heart but the pressure is not the same as in the arteries.