Across
- 4. System that helps us breathe
- 5. smallest unit of living things
- 7. is created from a bunch of cells to perform a certain function
- 10. is created from organs coming together to perform a certain function
- 11. System that connects muscles to bones
Down
- 1. System that digests
- 2. System that gives our body shape and protects us
- 3. Helps regulates organism's bodies
- 6. System that moves blood around our body
- 8. is created from tissue coming together
- 9. System that sends messages from our brain to the rest of our body