Systems of the Body

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Across
  1. 2. The two lower chambers of the heart
  2. 6. The arm is made up of this many bones
  3. 8. The two upper chambers of the heart
  4. 9. Your lungs are protected by this
  5. 12. Another name for windpipe
  6. 14. The strongest muscle in your body
  7. 15. this is what Skeletal muscles are held to the bones with
  8. 18. These muscles are voluntary muscles, which means you can control what they do
  9. 19. Carries the blood away from the heart
Down
  1. 1. Another name for nerve cells
  2. 3. what the muscle that makes up the heart is called
  3. 4. The name of the bone that protects your brain
  4. 5. The nervous system carries these to the brain
  5. 7. This is the control center of your nervous system
  6. 8. Carries the blood to the heart
  7. 10. A dome-shaped muscle that works with your lungs to allow you to inhale and exhale air.
  8. 11. The place where two bones meet
  9. 13. a special area at the end of the bronchiole that leads into clumps of teeny tiny air sacs
  10. 16. This system controls everything you do
  11. 17. another name for the bones in your spine