Body Systems

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Across
  1. 3. acts like a complex switchboard
  2. 4. carry blood away from the heart and veins
  3. 6. relay messages from the cerebrum to the cerebellum.
  4. 8. the strongest muscle in your body
  5. 9. contains the smallest muscles
  6. 11. between the left ventricle and the aorta
  7. 13. largest part of the brain.
  8. 18. the amount of different types of muscles
  9. 19. a network of tiny blood vessels
Down
  1. 1. air fills a large portion of the millions of alveoli
  2. 2. protects your lungs
  3. 5. runs from the brain down through the back.
  4. 6. another name for your kneecap
  5. 7. the air is warmed and humidified here
  6. 10. the longest and strongest bone in the body
  7. 12. hardest working muscle in the body
  8. 14. covers the air-only passage when we swallow
  9. 15. separates the left atrium from the left ventricle.
  10. 16. the continuation of the airway below the larynx.
  11. 17. another name for your collar bone