Biology Crossword

123456789101112
Across
  1. 2. A muscle below the lungs which are used in respiration.
  2. 7. An elastic tissue that joins muscle to bone.
  3. 8. Cushions the ends of bones and reduces friction when moving your joints.
  4. 11. To shorten or to undergo an increase in tension.
  5. 12. A chemical reaction that happens in the cells of living organisms.
Down
  1. 1. It makes red and white blood cells.
  2. 3. Where gas exchange happens, they are in the lungs.
  3. 4. A flexible tissue found in bones.
  4. 5. The largest bone in the human skull.
  5. 6. A point where two bones make contact.
  6. 9. The movement from high to low concentration.
  7. 10. Taking air in and expelling it from the lungs.