Circulatory and Respiratory Systems

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Across
  1. 4. connect arteries and veins
  2. 5. we need this gas to make energy from food
  3. 9. the trachea branches into these two tubes
  4. 10. breathe in
  5. 13. a muscle at the bottom of your chest
  6. 14. grape-like clusters surrounded by capillaries
  7. 16. one of the most common respiratory conditions in children
  8. 18. circuit that carries blood from heart to body
  9. 19. carry blood back to heart
Down
  1. 1. you do this when something irritates your nose
  2. 2. scientific name for windpipe
  3. 3. force the blood exerts on walls of arteries
  4. 6. you do this when something irritates your throat
  5. 7. main job of the circulatory system
  6. 8. circuit that carries blood from heart to lungs
  7. 11. disease that causes narrowing of arteries
  8. 12. one of two places where air enters your body
  9. 15. one of two places where air enters your body
  10. 16. carry blood away from heart
  11. 17. proteins that determine blood type