Across
- 3. food is broken up into nutrients
- 4. the smallest blood vessels are called...
- 8. the powerhouse of the cell
- 10. Growth Stage of the cell
- 12. carry blood away from the heart
Down
- 1. the lungs are part of the_______system
- 2. to view small cells and other small objects
- 5. carry blood to the heart
- 6. the main muscle of the respiratory system is...
- 7. the trachea also know as...
- 9. there are _____ human organ systems
- 11. abnormal lump of cells