man the living machine

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Across
  1. 3. all the sense organs are connected to the brain through the ______________
  2. 8. the living machine
  3. 9. the sense organs sends messages to ______________
  4. 11. the ___________ supplies oxygen to various parts of our body.
  5. 12. the length of small intestine
  6. 13. there are ____________ sense organs
  7. 14. throw out carbondioxide
Down
  1. 1. the length of large intestine.
  2. 2. ___________ consists of the brain, the spinal cord and the nerves.
  3. 4. remove urine
  4. 5. the heart, blood and the blood vessels make up the _______
  5. 6. removes sweat
  6. 7. our body is made of _________ bones
  7. 9. purifies our blood
  8. 10. _____ is the process of changing of food into a simple form so that it can be used by the body.