Blood vessels
There are three main types of blood vessels:
Pressure
Backflow
Veins Thinner
Oxygenated
1.
Oxygen
Capillaries
Valves
2.
Low
3.
Heart Deoxygenated
Carbon dioxide
Use the words in the box to fill in the gaps:
1. Arteries carry blood at high ……………………………….. away from the …………………….
2. The blood in most arteries is …………………………………………………... blood.
3. ………………….... drain the blood back from the tissue to the heart at ……………. pressure.
4. Veins have …………….…….. walls than arteries, and carry ……………………………………..… blood back
to the heart.
5. Veins have …………………………. to prevent the …………………………………..….. of blood
6. ……………………………………………….. are the smallest blood vessels
7. Capillaries are where gases are exchanged, including ………………..… …………………………….…. and
……………………….. .
Draw diagrams of the three main types of blood vessels in the boxes below, and write the
name under each diagram.