Respiratory System Vocabulary

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Across
  1. 3. The windpipe that carries air to the lungs
  2. 5. The voice box that helps produce sound
  3. 6. System Body system that moves blood, oxygen, and nutrients through the body
  4. 7. Bones that protect the lungs and heart
  5. 9. Muscle that helps the lungs expand and contract for breathing
  6. 10. Tubes that carry air from the trachea into each lung
  7. 11. Gas that people breathe in to survive
Down
  1. 1. Large, spongy organs where oxygen enters the blood
  2. 2. Tiny air sacs where oxygen and carbon dioxide are exchanged
  3. 4. Tiny hairs in the nose and airways that clean the air
  4. 7. System Body system that helps you breathe in oxygen and breathe out carbon dioxide
  5. 8. Dioxide Gas that people breathe out