Circulatory & Respiratory System

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Across
  1. 3. A cavity at the back of the nose, connecting the mouth and nose to the oesophagus
  2. 4. Scientific name for voice box
  3. 6. Tiny hairs lining the nostrils
  4. 12. __________ dioxide is breathed out
  5. 13. _________ system contains organs and tissues taking air into the body
  6. 15. A blood clot
  7. 16. _________ system is responsible for carrying materials and nutrients around the body
  8. 18. Small tubes formed by the division of the Bronchi
  9. 19. Blood vessel that carries blood back to the heart
Down
  1. 1. The protein found in your blood that carries oxygen
  2. 2. Tubes formed by the division of the trachea
  3. 5. Sheet of muscle that separates the chest from the abdomen
  4. 7. _________ muscle is the type of muscle found in the heart
  5. 8. When someones inhales, their lungs expand
  6. 9. Cluster of gas sacs at the end of the bronchioles where gas exchange takes place
  7. 10. A series of chemical reactions that takes place in cells to release energy
  8. 11. _____ exchange is the process whereby oxygen and carbon dioxide move between the bloodstream and lungs
  9. 14. Blood vessel that carries blood away from the heart
  10. 17. Tube that carries air from the nose and mouth into the chest cavity