Respiratory & Cardiovascular Systems

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Across
  1. 3. respiratory pigment, a pigment that binds to oxygen
  2. 4. bronchi branch
  3. 7. this system has 3 main components
  4. 9. chronic high blood pressure
  5. 10. carry blood to heart
  6. 11. allergic reaction where bronchioles constrict and mucus production increases
  7. 12. small, vascularized sacs
Down
  1. 1. most abundant chemical in ETS
  2. 2. air enters the lung through this
  3. 5. separates respiratory system from digestive organs
  4. 6. where the exchange of gasses occurs
  5. 8. carry blood away from heart