The Respiratory System (upper & lower tracts)

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Across
  1. 2. quietbreathin/out
  2. 4. microscopicspheresofairsacswithtonsofsurfaceareaforgasexhange/coveredinbloodvesselsfordiffusion
  3. 7. domeshapedmusclefacilatatesinspiration/expiration
  4. 9. lotsofbloodvesselsthataddheat/moisture to air
  5. 12. twomainbranchintomanysmallerairpassages
Down
  1. 1. hallowpockets
  2. 2. semiridged/particlecartalige/rongsgivestructure
  3. 3. “alwaysin”air
  4. 5. protectstracheafromforgienbodies
  5. 6. sacsthatinflate/deflate
  6. 8. junctionbetweendigestiveandrespiratorysystems
  7. 10. entrypointoftheairintothebody
  8. 11. deepbreathin/out