RESPIRATORY SYSTEM

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Across
  1. 3. This is known as breathing in
  2. 6. When you inhale the air pressure in the lungs __________
  3. 9. This happens to the breathing rate when they exercise
  4. 11. The powerhouse of the cell
  5. 13. This process occurs in cells using glucose and oxygen
  6. 14. This is the movement of particles from a high to a low concentration until evenly distributed
  7. 16. This is where gaseous exchange occurs
  8. 17. This makes up 78% of air
Down
  1. 1. Air pass through this from the nose and mouth to the bronchi
  2. 2. These are the muscles that lie between the ribs
  3. 4. This is needed in the cells to power them
  4. 5. The only way the body can obtain oxygen
  5. 7. Air sacs found in clusters at the end of the bronchioles
  6. 8. The sheet of muscle at the bottom of the chest cavity
  7. 10. This can cause lung cancer
  8. 12. The breathing rate is the number of times you breathe in and out per __________
  9. 15. This diffuses from the lungs into the blood