6_05 body systems

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Across
  1. 3. system The system that protects the body from infection
  2. 4. system Bones and joints
  3. 6. system Controls everything that happens in our bodies
  4. 8. system The system that controls breathing
  5. 9. Smallest level of organization for living things
Down
  1. 1. tissue Has characteristics that force the heart to beat
  2. 2. The main building block of the human body
  3. 3. system The organ system that protects the body from damage, comprising the skin and its appendages
  4. 5. Humans are an example
  5. 7. system These organs extract nutrients from foods