GRADE 9 - SCIENCE - Q1-UNIT1-MODULE1 - RESPIRATORY AND CIRCULATORY SYSTEMS

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Across
  1. 3. – Carries blood back to the heart
  2. 4. – Protein carrying oxygen in red blood cells
  3. 7. – Body parts working together
  4. 10. – Two branches leading from trachea to the lungs
  5. 11. – System working with circulatory for nutrient absorption
  6. 13. – Windpipe; passageway for air to the lungs
  7. 15. – Smaller branches inside lungs
  8. 17. DIOXIDE – Waste gas exhaled
  9. 18. – Main organ of respiratory system
  10. 20. – Liquid part of blood
  11. 23. – Pumps blood throughout the body
  12. 24. – Gas inhaled and delivered to cells
  13. 25. – Tiny air sacs where gas exchange occurs
Down
  1. 1. – Substances absorbed by circulatory system
  2. 2. – Carries blood away from the heart
  3. 3. – Lower chamber of the heart
  4. 5. – Breathing process
  5. 6. – System assisting breathing via movement
  6. 8. – Body’s stable internal environment
  7. 9. – Main breathing muscle
  8. 12. – Heartbeat felt in arteries
  9. 14. – Movement of blood through the body
  10. 16. – Smallest blood vessels for gas/nutrient exchange
  11. 19. – Throat region before esophagus/trachea
  12. 21. – Voice box
  13. 22. – Largest artery in the body