RESPIRATORY SYSTEM

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Across
  1. 2. A muscle that separates the thoracic and abdominal cavities
  2. 3. A condition characterized by difficulty breathing, especially during exercise
  3. 5. The tiny air sacs in the lungs where gas exchange occurscat Likes to chase mice
  4. 6. The inflammation of the lungs
  5. 7. The windpipe
Down
  1. 1. A tube that carries air from the trachea to the lungs
  2. 4. A thin layer of tissue that covers the lungs and lines the chest cavity