The Human Machine

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Across
  1. 3. the specific form and shape of something
  2. 8. what something does
  3. 10. to take something apart to study it
  4. 12. active mostly at night
  5. 13. the back of the eye that senses light and sends messages to the brain
  6. 15. the clear layer in front of the eye
  7. 19. the hard parts inside many animals that help give their bodies shape
  8. 20. a part of the body where two bones come together and can bend
  9. 21. the brain and all the nerves in the body
  10. 22. a clear object that changes the direction of light as it passes through
  11. 23. a test used to discover new information about a question
Down
  1. 1. the dark opening in the center of the eye
  2. 2. when light bounces off something
  3. 4. part of the body that attaches muscle to bone
  4. 5. a part of the body that attaches to bones and allows the body to move
  5. 6. part of the body that receives processes, and responds to signals from nerves
  6. 7. the ability to see
  7. 9. something that tricks or confuses your brain
  8. 11. all of the bones of an animal, including humans
  9. 14. parts of the body that carry signals from one part of the body to another part
  10. 16. parts of the body that carry signals from the brain to muscles
  11. 17. parts of the body that carry signals from the senses to the brain
  12. 18. the colored part of the eye that is shaped like a donut
  13. 19. a large muscle in the upper arm
  14. 22. comes from the Sun and lamps and makes it possible to see things