Across
- 3. – working in opposite pairs
- 7. – joins muscle to bone
- 11. – kneecap
- 12. – main air tubes
- 13. – painful swollen joints
- 14. – air taken in or out
- 15. cavity – space where lungs sit
- 17. respiration – energy release using oxygen
- 18. volume – amount of air the lungs can hold
- 19. – tiny air sacs in lungs
Down
- 1. – smooth joint tissue
- 2. – skull
- 4. – gas needed for breathing
- 5. – process of releasing energy
- 6. – tissues that move the body
- 8. – collarbone
- 9. – windpipe
- 10. – breathing muscle
- 16. – simple sugar for energy