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