Human Body Systems

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Across
  1. 1. functional unit of all living organisms
  2. 4. Pumps blood around the body
  3. 5. Substances that work together to perform a function
  4. 8. Breaks down food you eat
  5. 9. Allows the body to move
  6. 10. Protection from abrasions (cuts)
  7. 12. Adds oxygen to the blood in the body
Down
  1. 2. System of glands that are not connected
  2. 3. Attacks pathogens as they enter the body
  3. 6. Filters the blood
  4. 7. Protects and holds organs in place
  5. 11. Sends and receives messages through neurons