Muscular and Skeletal System

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Across
  1. 6. unconscious control
  2. 7. Forces us to move
  3. 10. produces red blood cells
  4. 11. keeps heart pumping
Down
  1. 1. attached to bone
  2. 2. involuntary muscle
  3. 3. reduces friction
  4. 4. 10x harder than metal
  5. 5. under control concious
  6. 8. Shapes our body
  7. 9. what a bone needs to be strong