Across
- 4. Small fragment of cells that help blood to clot when a blood vessel is damaged
- 5. A patch that was made up of fat, cholesterol, blood cells and other substances
- 6. A yellowish component of blood that holds all blood cells
- 8. Something that happens if the blood supply to your brain is blocked
- 10. Something that keep veins flowing in the right direction and prevent backflow
- 11. A thin-walled blood vessel with valves that leads blood towards the heart
- 13. A shape which is flat and thin in middle
- 14. A thick-walled blood vessel that carries blood away from the heart
- 15. A deficiency disease in human caused by lack of iron
Down
- 1. A thin-walled blood vessel used to deliver substance to cell
- 2. A chemical that carries oxygen inside red blood cell
- 3. The regular throb of an artery than indicates your heart rate
- 7. Something that happens if the artery that supplies blood to heart is blocked
- 9. A process where molecules move in and out of blood from high concentration to low concentration
- 12. The organ that pumps blood around your circulatory system