Respiratory System

12345678
Across
  1. 4. The muscle under the lungs that helps you breathe in and out.
  2. 5. Where air enters the respiratory system and gets filtered.
  3. 6. Lung infection that causes coughing and trouble breathing.
  4. 8. Area where the diaphragm moves to help you breathe.
Down
  1. 1. The process of inhaling oxygen and exhaling carbon dioxide.
  2. 2. Organs that bring in oxygen and release carbon dioxide.
  3. 3. Bones that protect the lungs and help with breathing.
  4. 7. Condition where airways are narrow, making it hard to breathe.