Respiratory System

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Across
  1. 4. Tubes in the lungs that branch off from Bronchi
  2. 6. Move mucous out of the synus and nose
  3. 8. Smallest functional unit in the respiratory tract
  4. 9. Airways that lead from the trachea into the lungs
Down
  1. 1. Skeletal muscle that sits at the base of the chest
  2. 2. The action of breathing
  3. 3. Commonly known as windpipe
  4. 5. Also known as O2
  5. 7. Commonly called the voicebox