Respiratory System

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Across
  1. 3. protects the lungs
  2. 4. the minute branches into which a bronchus divide
  3. 5. the major muscle of respiration that contracts rhythmically and continually
  4. 6. tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going
Down
  1. 1. the long tube that connects your larynx (voice box) to your bronchi
  2. 2. connect to your trachea (windpipe) and direct the air you breathe to your right and left lungs.