Across
- 3. makes blood cells
- 5. maintance of the body systems
- 9. breathing systems
- 13. can stop bones from growing
- 14. a place where bones meet
Down
- 1. when a musclue is over used
- 2. muscle moves food through the digestive system
- 4. you use your own body weight against you
- 6. a disease that makes bones less dense
- 7. injury in which a muscle or tendon is over stretched or torn
- 8. the surface layer of skin cells on a plant or animal
- 10. when your arm moves outwards
- 11. jogging swimming and running are good types of the exercise
- 12. when your arm moves in