Organ System

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