Biology 20 C&D Puzzle 2

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Across
  1. 1. joints like the knee that allow movement in only one direction
  2. 4. bones that are long and thin and make up the arms, legs, hands and feet
  3. 7. bone cells that eat other cells and bone matrix
  4. 8. violent and involuntary muscle contractions
  5. 10. this type of arthritis occurs where the immune system attacks the joints
  6. 12. this muscle performs the opposite action of the prime mover (ex: what the tricep is to the bicep)
  7. 14. tough connective tissue that connects muscles to bones
  8. 15. part of the skeleton that includes the bones of the arms, legs, and pelvic girdle
  9. 16. joints like your shoulder that give free movement in all directions
  10. 17. bone building cells
  11. 18. this hollow area runs most of the length of the long bone
  12. 19. an important function of bones in the production of these
  13. 21. this is the form of energy used in the cell
  14. 22. this mineral is important for muscle contractions as well as strong bones
Down
  1. 1. microscopic tubes that run through compact bone and contain blood vessels
  2. 2. an important function of bones in the storage of these
  3. 3. a crippling genetic disease where the muscles gradually weaken and atrophy
  4. 5. large reduction in the size of muscle fibers
  5. 6. these are where two bones come together
  6. 9. the process of turning cartilage into bone
  7. 11. this stimulates the muscle to cause a contraction
  8. 13. when a person gets in better shape more of these will be formed in the muscles
  9. 20. when oxygen debt occurs in muscles this will build up in causing soreness