Across
- 1. your mouth
- 4. bones
- 5. helps the body communicate with eachother
- 7. internal glands
- 8. blood
- 9. muscles
- 11. body of an animal
Down
- 2. the body fluids
- 3. produce egg and sperm cells
- 6. exchange for gas
- 10. vertebrates that are part of the immune system