Body systems, organs & functions

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Across
  1. 3. The system that helps the body move
  2. 8. The system responsible for producing offspring
  3. 12. Organs used for breathing and gas exchange
  4. 13. Organ that pumps blood throughout the body
  5. 15. The system that protects the body from disease
  6. 17. The system that uses hormones to control body functions
  7. 18. The system that sends messages through the body
  8. 19. Tiny air sacs in the lungs where gas exchange happens
  9. 20. Connects bones to other bones in joints
Down
  1. 1. Tube that carries food from the mouth to the stomach
  2. 2. The control center of the nervous system
  3. 4. The system that provides structure and support
  4. 5. The system responsible for gas exchange
  5. 6. Organ where food is mixed with acid and enzymes
  6. 7. The system that moves blood around the body
  7. 9. Gas the body needs to produce energy in cells
  8. 10. Long tube where most digestion and absorption happens
  9. 11. Organs that filter blood and produce urine
  10. 14. The system that breaks down food into nutrients
  11. 16. The system that removes waste from the body