Across
- 2. type of blood cells found in bone marrow
- 6. structures found in the cytoplasm
- 8. glands that cool body by evaporation
- 9. second level of organization
- 10. maintains a stable internal environment
- 11. cellular fluid
- 13. type of muscle in heart
Down
- 1. fifth level of organization
- 3. outer layer of skin
- 4. basic unit of life
- 5. control center of a cell
- 6. third level of organization
- 7. funtion of skeletal system
- 12. type exersise that produced endurance