Review

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Across
  1. 2. top chambers of the heart
  2. 3. air sacs at the end of bronchioles
  3. 6. separates left and right side of the heart
  4. 7. decrease in muscle size after long periods of low muscle usage
  5. 10. any type of break to the bone
  6. 11. carry blood away from the heart
  7. 13. ability of blood to carry oxygen is reduced
  8. 14. bring blood to the heart
  9. 15. process by which bone is formed, renewed,repaired
Down
  1. 1. lower chambers of the heart
  2. 4. band of fibers that attaches bone to bone
  3. 5. progressive loss of bone density
  4. 8. fibrous cord that attaches muscle to bone
  5. 9. main airways into the lungs
  6. 12. curvature of the spine