The Respiratory System!

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Across
  1. 3. passage way to lungs
  2. 5. main organ for gas exchange
  3. 6. main airways that distribute gases in the lungs
  4. 8. muscle that assist with breathing
Down
  1. 1. way to breath that isn't your nose
  2. 2. entry way for oxygen and releases Co2 out
  3. 4. tiny air sacs that absorb 02 and release it
  4. 7. blood vessels that pick up 02 to alveoli