Across
- 2. system where blood travels 2x to the heart in one journey
- 6. straw coloured liquid in the blood
- 7. shape of red blood cell
- 9. connects the arteries and veins
- 11. approx litres of blood in the human body
- 12. formed from the breakdown of excess protein
- 13. form fibrin to clot the blood
- 17. absent from cells to make space for more oxygen
Down
- 1. binds to oxygen in rbc
- 3. engulfs bacteria
- 4. product of digestion carried in plasma
- 5. carries blood high in pressure
- 8. size of lumen in arteries
- 10. made by lymphocytes
- 14. a feature of the vessel walls that allow it to stretch
- 15. prevents the back flow of blood
- 16. carries deoxygenated blood