Across
- 3. organ found in all vertebrates
- 5. made up of glands
- 6. includes the heart, blood vessels, and blood
- 10. primary organs of the respiratory system
- 11. serves as a physical barrier protecting the internal environment of the body
- 12. considered to be part of the immune system
- 14. also known as the urinary tract
- 15. helps the body fight infections
Down
- 1. responsible for breathing
- 2. controls nerves that run throughout the body
- 4. the reproduction system
- 7. supports digestion
- 8. are endocrine glands
- 9. what your food goes through
- 13. filters water and waste