Across
- 2. tissue fluid consists mainly of ... and white blood cells
- 6. carry deoxygenated blood
- 7. involved in blood clotting
- 11. white blood cell
- 14. a type of blood vessel
- 17. controls heart beat
- 18. left atrium recieves blood from the ... vein
- 20. condition where the heart is in short oxygen supply
- 21. blood vessel carries blood away from the heart
- 22. high carbon dioxide concentration ... the heart rate
Down
- 1. inorganic element in the blood
- 3. the circulatory system in fish
- 4. when heart is relaxed
- 5. supply blood to the heart
- 8. blood vessels assoicated with the kidney
- 9. measurement of heart activity
- 10. heart valve
- 12. blood clot
- 13. the scientist who demonstrated the one-way action of valves
- 15. heart muscle
- 16. component of blood
- 19. the circulatory system in humans