The Respiratory System

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Across
  1. 3. this is when your diaphragm contracts, your lungs compress, and carbon dioxide is forced out of the body
  2. 5. the muscle that helps the lungs expand and contract
  3. 7. this tissue is arranged in rings within the respiratory system to support the trachea and bronchi
  4. 11. this human body system controls breathing so you don't have to think about it (2 words)
  5. 13. when you inhale this gas diffuses into your lungs
  6. 14. this structure is part of the skeletal system, it protects the lungs
  7. 15. tiny sacs of air with lots of surface area for gas exchange
  8. 16. this process is how oxygen and carbon dioxide move in between the alveoli and blood stream
Down
  1. 1. moistens, filters, and warms air
  2. 2. carries air to the lungs
  3. 4. the function of this structure is to prevent food and drinks from entering the lungs
  4. 6. this gas is a waste product that is removed from the blood (2 words)
  5. 8. this body system transports oxygen and carbon dioxide throughout the body
  6. 9. the protein in red blood cells that makes blood red
  7. 10. where oxygen and carbon dioxide diffuse in and out of the blood
  8. 12. lung texture