Across
- 4. carries water, oxygen and the nutrients to cells
- 6. a gas important for life
- 10. heart, blood, veins and arteries together
- 12. they carry blood away from the heart to the organs
- 13. very small blood vessels, one cell thick
- 16. the colour of plasma
- 17. it gives the red colour to the bood
- 18. a type of fat deposited on the arteries wall, the main reason of heart attacks
- 19. it is the pressure of the blood that can be felt in certain points of the body
Down
- 1. a gas that is the waste after feeding the cells
- 2. the pressure of blood when heart contracts
- 3. strand that help blood to clot
- 5. blood vessels that return the blood back to the heart for another load of oxygen
- 7. it pumps 4.5 litres of blood every minute
- 8. the blood pressure when heart relaxes
- 9. broken-up cells from the blood
- 11. a liquid in which red and white blood cells are suspended
- 14. a cell from blood which does not have a nucleus
- 15. they help us against microbes