7 Science Human Body Systems

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Across
  1. 3. this system gets rid of the body's wastes
  2. 4. this system gathers oxygen and expels carbon dioxide
  3. 7. this system makes chemical messages to help regulate _______
  4. 9. the maintenance of a constant internal environment when outside conditions change
  5. 12. a major organ part of the integumentary system
  6. 13. this system produces sperm and eggs
  7. 14. the ______ is the pump for the cardiovascular system
Down
  1. 1. this system works with the skeletal system to help you move
  2. 2. the lymphatic system is a major part of the immune system to fight bacteria and _____
  3. 5. cause a disruption in homeostasis
  4. 6. this system breaks down food into nutrients the body can use
  5. 8. alcoholism can damage this organ that removes toxins from the blood
  6. 10. this system supports and protects the body
  7. 11. the nervous system sends _______ messages