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