Heart and Lungs

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Across
  1. 2. wind pipe
  2. 3. carbon dioxide is transferred from the blood to the ...........
  3. 6. blood first flow into this.
  4. 7. the special tubes that carry blood around our body are called blood .......................
  5. 9. the process where we take in oxygen and breathe out carbon dioxide
  6. 10. a dome shape muscle
  7. 13. the parts of the bodies that are specialized to perform particular functions
  8. 15. they help form clot after an injury
  9. 19. we can't see the .............. parts of the body without any expensive and specialized equipment
  10. 20. it makes the blood red
  11. 22. ............... carry blood away from the heart
  12. 23. one of the blood vessels
  13. 25. oxygen is used in the creation of ............. through the process of respiration
  14. 26. the smallest kind of blood vessel
  15. 28. they carry blood back to heart
  16. 29. ................. transport blood to the heart
Down
  1. 1. part of the immune system
  2. 2. A group of the same kind of cells
  3. 4. it is attached to your nose and mouth
  4. 5. the primary function of respiratory system is to supply blood with ..............
  5. 8. the windpipe connects ............. to the lungs
  6. 11. the dome shape muscle will move down when you do this
  7. 12. pericardium prevents the heart from ...............
  8. 14. they have strong and elastic wall that can withstand the high pressure of the fast flowing blood.
  9. 16. it allows to breathe in oxygen and breathe out carbon dioxide
  10. 17. they push out blood of the heart when it contracts
  11. 18. the yellowish liquid in blood
  12. 21. it is composed of cells and materials that are organized into tissue, organs and organ systems
  13. 24. the doors that keep the blood moving in
  14. 27. we can use ................ to show body parts and how they work