Human Body Systems

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Across
  1. 2. Carry blood back to the heart.
  2. 8. A place where two bones come together.
  3. 9. Tiny balloons like air sacs in the lungs.
  4. 11. Controls your metabolism.
  5. 14. takes in oxygen and eliminates carbon dioxide.
  6. 15. Supports and protects the body.
  7. 16. Enables movement of the body and internal organs.
  8. 17. Organ that pumps blood throughout the body.
  9. 19. raises/lowers sugar levels in the blood.
  10. 21. Breaks down food and absorbs nutrients.
  11. 22. Protects bones when they rub against each other.
  12. 23. A factor that causes sensory receptors to begin to function.
  13. 24. Directs sugar to blood cells.
  14. 25. Chemical messengers secreted by glands.
Down
  1. 1. Detects information from the environment and controls body functions.
  2. 3. Removes waste.
  3. 4. Transports materials to and from cells.
  4. 5. Controls many processes by releasing chemicals.
  5. 6. Automatic muscles that you have no control over.
  6. 7. The maintenance of sturdy internal conditions in an organism
  7. 10. Line walls of hollow organs.
  8. 12. The master gland that controls many other glands.
  9. 13. Creates blood cells.
  10. 18. The rate at which your cells use energy.
  11. 20. The endocrine system is made up of these.