Body Systems

12345678910111213
Across
  1. 3. The main organ of the nervous system
  2. 6. This system carries oxygen through the body using blood
  3. 7. This system protects the body from illness and germs
  4. 9. The largest organ of the body, part of the integumentary system
  5. 10. This system helps remove waste from the body
  6. 11. The system that controls movement using muscles
  7. 13. The body's control center, located in the skull
Down
  1. 1. The organ where food is digested
  2. 2. Organ that pumps blood through the body
  3. 4. These carry messages between the brain and the body
  4. 5. The system that breaks down food for energy
  5. 8. This system includes bones and provides structure
  6. 12. The process of breathing involves this system