Body Systems

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Across
  1. 3. muscle this muscle looks smooth
  2. 5. bone hard outside part of bone
  3. 7. carry blood to heart
  4. 8. continuation of airflow below the larynx
  5. 11. what coordinates muscle movements
  6. 12. cortex what sends signals to nerves
  7. 13. protects the heart and lungs
  8. 14. biggest part of respiratory system
  9. 15. two sides of brain
  10. 18. back of nose and mouth
  11. 19. framework of a protein called
Down
  1. 1. carries blood to body
  2. 2. contains voice box
  3. 4. nervous system brain and spinal cord
  4. 6. pounds how much the brain weighs
  5. 9. carry blood away from heart
  6. 10. protects the brain
  7. 11. outer layer of cerebrum
  8. 16. blood what does the heart do
  9. 17. muscle muscle found in heart