Across
- 2. the walls of the heart are made up of cardiac ........... (6)
- 5. this divides the heart into left and right sides (6)
- 7. valves found in veins to prevent back flow (5,6,6)
- 11. part of the brain that controls our heart rate (7)
- 12. the largest artery in the body (5)
- 13. the largest vein in the body (4,4)
- 14. word meaning to do with the heart (6)
- 17. these blood vessels carry blood away from the heart (8)
- 18. these make sure blood only flows in one direction through the heart (6)
Down
- 1. when the heart is contracting it is said to be in ........... (7)
- 3. the upper chambers of the heart (plueral word) (5)
- 4. blood is circulated to the lungs to pick up oxygen in this type of circulation (9)
- 5. blood is circulated through all parts of the body in this type of circulation (8)
- 6. these tiny blood vessels carry blood through organs (11)
- 8. these vessels take blood away from the heart muscle (8,5)
- 9. these vessels feed blood and oxygen to the heart muscle (8,8)
- 10. the lower chmabers of the heart (pleural word) (10)
- 15. these blood vessels carry blood back towards the heart (5)
- 16. when the heart is resting it is said to be in ............. (8)