Levels of Organization

4. this system uses the lungs as the major organ to bring oxygen into our body
5. the organ that is the control center of all aspects of the body
8. levels by which the body is structured
9. this is used in movement of the body
10. a group of tissues that work together to do a particular job
12. the basic unit of life in an organism
13. a group of cells that work together to do a particular job
14. this system uses the stomach as its major organ to break down food for the body

1. a group of organs that work together to do a particular job
2. all of the organ systems work together to make this
3. organ that has the job of pumping oxygenated blood throughout the body
6. this type of cell carries oxygen to all parts of the body
7. this type of cell is our defense against germs
8. this is brought in by the respiratory system and is necessary for life
11. this system uses the brain as its major organ to command all aspects of the body