Arteries, Capillaries and Veins

What type of blood do arteries generally carry?

Oxygenated blood

In which direction do arteries carry blood?

Away from the heart

Why do arteries have elastic walls?

So they can expand to accommodate more blood volume.

What are capillaries?

The smallest type of blood vessel.

What happens at the capillaries?

Nutrients and waste are exchanged between the blood and body cells.

What type of blood do veins generally carry?

Blood with lower oxygen content and higher carbon dioxide content.

In which direction do veins carry blood?

To the heart from the body.

What are the walls of veins like compared to arteries?

They are thinner and less elastic than artery walls.