What blood vessel does this describe?: Large amounts of elastic tissue

What blood vessel does this describe?: Small amounts of elastic tissue

What blood vessel does this describe?: There is no elastic tissue

What does elastic tissue do in blood vessel walls?

What blood vessel does this describe?: There is large amounts of smooth muscle

What blood vessel does this describe?: Small amounts of smooth muscle as their is no need for blood to be diverted

What blood vessel does this describe?: There is no smooth muscle

What blood vessel does this describe?: Very smooth so blood can flow easily to reduce the risk of blood clots

What blood vessel does this describe?: Walls are completely made of endothelium and no other layers so speed up the exchange of substances

In what arteries are valves found in?

What blood vessel does this describe?: All of these have valves

What blood vessel does this describe?: No valves

Why do capillaries have thin walls?