Across
- 3. effort level for the ATP-CP system
- 5. fuel source for the anaerobic glycolysis system
- 8. combines speed and balance
- 9. sporting example of the aerobic system
- 11. consists of the brain and spinal cord
- 12. towards the midline of the body
- 14. a system that doesn't rely on oxygen
Down
- 1. away from the midline of the body
- 2. function of the skeletal system
- 4. when muscles contract but the length remains the same
- 6. a bone used for protection
- 7. joints that are freely moveable
- 8. the muscle that shortens and contracts
- 10. movement away from the midline of the body
- 13. a system used with oxygen
- 15. located in the walls of the heart