Across
- 3. Endurance can be increased by doing ______
- 7. Strands of tough tissue connect your skeletal muscle to your bones
- 10. Bones store ________
- 11. Enables your bones to move
- 12. Muscle action that is under your control
- 13. The organ system whose primary function is movement and flexibility
Down
- 1. Most of your bones when born are made out of _________
- 2. Your spinal cord is protected by _______
- 4. Moves food through the digestive system
- 5. Pumps blood around the body
- 6. A muscle that bends part of your body is called a ________
- 8. A muscle that straightens part of your body is an ___________
- 9. Muscle action that is not under your control