Body Systems

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Across
  1. 4. can relax and contract
  2. 6. nervous system function
  3. 7. found in the skin, organs & muscles
  4. 12. carry blood away from the heart
  5. 13. carry blood to the heart
  6. 15. the function is breathing
Down
  1. 1. commonly called the windpipe
  2. 2. when contract the tricep relax
  3. 3. the organ that pulls air into the body
  4. 5. the heart muscle is called
  5. 8. hair, nails, and skin
  6. 9. muscle you use to breathe
  7. 10. is an involuntary organ
  8. 11. supports and protects
  9. 14. largest organ