Across
- 3. guppies stay inside mother
- 7. Responsible for all voluntary activities
- 8. Large chamber that serves as a one way blood compartment
- 9. a supporting rod that runs through the body
- 11. embryos stay inside mother after fertilization
- 14. Oblongata controls functioning organs
- 15. thick-walled muscle chamber
- 16. an animal with a hollow nerve core
- 17. gas filled organ
- 18. System Fish use it to sense motion of other fish
Down
- 1. hatch outside the mothers body
- 2. Coordinates body movement
- 4. closes over the eye
- 5. strong tissue that supports the body
- 6. these are eardrums
- 10. digests urine, eggs, waste, and sperm
- 12. pouches paired under the structures of the throat
- 13. closes and supports spinal cord