Third Grade Science Test #6

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Across
  1. 2. the body has two
  2. 5. blood vessels that take blood to your heart
  3. 8. keep dust and other objects out of your eyes
  4. 9. the control center of your body
  5. 10. the part of the eye that focuses the picture you see
  6. 11. another name for the heart, ? muscle
  7. 13. the network of nerves that includes your brain, nerves, and spinal cord is this system
  8. 16. muscles that move when you want them to
  9. 17. has four chambers
  10. 20. the place where two bones join together
  11. 22. the largest organ of the body
  12. 23. the layer of skin you see
  13. 24. your heart and blood vessels that circulate blood throughout your body parts is this system
Down
  1. 1. the parts of the body that change food you eat into a form your body can use is this system
  2. 3. the blood cells that help fight infection and disease
  3. 4. the system of bones that makes blood cells and stores minerals
  4. 6. any movement of your body happens through this system
  5. 7. the nerve that carries the message of hearing to the brain
  6. 12. the part of the tooth that we can see
  7. 14. the windpipe, lungs, and diaphragm that help you breathe is this system
  8. 15. ways your skin protects your body: warns body of danger,? , keeps body at an even temperature
  9. 18. the blood vessels that take blood away from your heart
  10. 19. a group of cells working together
  11. 21. tiny holes on the skin