Across
- 3. thin walled blood vessel
- 5. food is physically broken down into nutrients and also broken down chemically
- 8. the main muscle of the respiratory system
- 12. thin sheets of cells tightly packed lining internal organs
Down
- 1. pumps blood through the body
- 2. It provides the cell with the instructions
- 4. cleans the blood
- 6. the gortwh stage of the cell cycle
- 7. uncrontrollable division cells
- 9. thick walled blood vessel
- 10. movement of molecules from an are of high concentration to an area of low concentration
- 11. gas exchanges between O2 and CO2 happen here