Body Systems Crossword

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Across
  1. 2. Primary muscle in the respiratory system that helps you inhale and exhale (breathe in and out)
  2. 5. These carry oxygen-rich blood AWAY from the heart to the body
  3. 9. This system delivers oxygenated blood to different parts of the body
  4. 11. This disease is the leading cause of death in America
  5. 12. Leading cause of respiratory disease
Down
  1. 1. Your "windpipe". Vital for taking in air
  2. 3. Tiny, grape-like air sacs at the end of the bronchioles in the lungs, acting as the primary site for oxygen and carbon dioxide exchange
  3. 4. These return deoxygenated blood BACK TO the heart
  4. 6. This system allows the body to take in oxygen and expel carbon dioxide
  5. 7. The primary air transport system, conducting air from the trachea to the lungs, dividing into left and right sides
  6. 8. The heart has how many "chambers"
  7. 10. Primary component of respiratory system. Takes in air.