Across
- 2. Produces antibodies that help to remove the bacteria during an infection
- 4. This blood vessel has thick muscular walls to withstand high blood pressure from the heart.
- 5. Valves are found in this blood vessel to ensure that blood flow is in one direction.
- 7. Blood needs to transport this gas to all parts of the body.
- 8. Substances that form in blood vessels that causes blockage.
- 10. If artery that is supply oxygen to heart is blocked, one will suffer from this condition.
- 11. Help to stop bleeding at wounds by clotting blood.
- 12. If artery that supplies oxygen to brain is blocked, one will suffer from this condition.
Down
- 1. This blood vessel has a one-cell thick wall to allow for efficient exchange of gases.
- 3. Gas that is removed from respiring cells.
- 6. Contains haemoglobin that binds to oxygen and transport oxygen to all parts of the body.
- 9. Muscle that pumps blood to all around your body.