M2 Science - Respiratory System

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Across
  1. 2. it is in the red blood cells, denoted as (Hb)
  2. 5. contracts to increase volume of thorax
  3. 7. breathing out
  4. 8. the passageway where air comes in
  5. 9. small air sacs
Down
  1. 1. leads FROM larynx TO bronchus
  2. 3. air travels through it to the lungs
  3. 4. a passageway connecting the nose to the larynx
  4. 5. a sickness
  5. 6. where gas exchange occurs
  6. 7. fun and makes your body strong and healthy