Across
- 1. functional unit of all living organisms
- 4. Pumps blood around the body
- 5. Substances that work together to perform a function
- 8. Breaks down food you eat
- 9. Allows the body to move
- 10. Protection from abrasions (cuts)
- 12. Adds oxygen to the blood in the body
Down
- 2. System of glands that are not connected
- 3. Attacks pathogens as they enter the body
- 6. Filters the blood
- 7. Protects and holds organs in place
- 11. Sends and receives messages through neurons