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