Across
- 2. Blood that appears red is carrying this
- 4. specific type of blood cell that carries oxygen around your body
- 7. top chambers of your heart
- 10. Largest bone in your body
- 11. The blood cells that help fight diseases
- 13. When you exhale, the diaphragm moves...
- 14. these string-like fibres hold two bones together around a joint
- 16. your funny bone
- 17. the part of blood which helps to create blood clots
- 18. Very small, thin blood vessels
- 19. blood vessels that have valves in them to prevent the back-flow of blood
- 20. Sheet of muscle that helps us breathe
Down
- 1. chamber at the bottom of your heart
- 3. Blood vessels with thick walls that transport blood under high pressure
- 5. When your ribs expand your lung volume gets...
- 6. muscle on top of your humerus
- 8. muscle behind your humerus
- 9. main artery coming from the heart
- 12. the name of the air sacs in your lungs that absorb oxygen
- 15. scientific name for the windpipe
- 17. the yellow fluid part of blood