Across
- 2. name of the muscle connected to heel bones by Achilles
- 6. a muscle that contracts during flexion
- 7. a muscle located in the under part of the arm
- 8. biceps and triceps muscles work as a ________
- 10. muscles that produce movements by working in pairs
- 11. organ that controls the muscles
- 12. when muscles get shorter
- 14. muscles can only move a bone in _____ direction
- 15. muscles can only pull not ________
Down
- 1. a muscle that contracts during leg flexion
- 3. the largest tendons in your body
- 4. happens to the biceps during extension
- 5. most pair of muscles pull in ___________ direction to allow movement
- 9. a muscle located in the upper part of the leg
- 13. attaches muscles to bones