Respiratory System

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Across
  1. 5. dioxide, the gas that diffuses out of the blood into the alveoli and out of the body
  2. 6. respiration, gas exchange between the capillarie and the cell
  3. 8. the air sacs in the lungs where oxygen and carbon dioxide gasrs are exchanged
  4. 10. the muscle underneath the lungs that causes breathing
  5. 11. the windpipe
  6. 13. the tiny blood vessels that surround the alveoli
  7. 15. the number of lungs that you have
  8. 16. when the ribs and diaphragm muscles relaxes an air moves out the lungs
  9. 17. the blood cell that carry oxygen from the lungs to the cells
Down
  1. 1. where the vocal cords are
  2. 2. when the ribs and diaphragm muscles contracts moving down
  3. 3. special movements that allow us to breath
  4. 4. the organ that pump blood round the body
  5. 7. the gas that diffuses into blood from the air to the alveoli
  6. 9. passway used in the digestive and respiratory systems
  7. 12. what occurs between the alveoli and the capillaries
  8. 14. the bone parts of the toraxic cavity that protect the lungs