Body Systems

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Across
  1. 6. a hollow, muscular organ located in the center of the chest
  2. 8. the basic unit of life
  3. 11. when a muscle shortens
  4. 14. body system consisting of bones
  5. 15. muscle beneath lungs and above the abdomen
  6. 16. system a collection of organs that work together
  7. 17. a group of cells that produce a release substances
  8. 18. system that exchanges oxygen and carbon dioxide
Down
  1. 1. blood flow between heart and lungs
  2. 2. blood flor between heart and rest of the body
  3. 3. a group of body systems
  4. 4. body system that helps the body move/works with skeletal system
  5. 5. body system that moves blood and oxygen throughout the body
  6. 7. a collection of cells that do a certain job
  7. 9. when a muscle stretches
  8. 10. a group of tissue that perform a specific job
  9. 12. connects muscles to bones
  10. 13. the strongest bone in the body