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