organ systems & body

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Across
  1. 4. removes waste and extra water to make urine
  2. 7. carry oxygen and nutrients to your body's tissues
  3. 9. pumps blood from the heart to the lungs to get oxygen
  4. 10. helps maintain fluid balance in the body
  5. 11. gland that the female reproductive cells are produced
  6. 14. a highly complex part of an animal that coordinates its actions and sensory information
  7. 17. makes enzymes and hormones
  8. 18. carries nerve signals from your body to the brain
  9. 19. a passive biological system that removes excess, unnecessary materials from the body fluids of an organism
  10. 20. a complex network of glands and organs
  11. 22. part of the skeletal system, in your head
Down
  1. 1. enzymes that help the body digest food and water
  2. 2. a biological system consisting of specific organs and structures used for gas exchange in animals and plants
  3. 3. a collection of internal and external organs — in both males and females — that work together for the purpose of procreating
  4. 5. the largest organ of the body that forms a physical barrier
  5. 6. your body's central framework
  6. 8. takes food in and breaks it down
  7. 12. air-filled organs located on either side of the chest
  8. 13. pumping blood around your body, constantly beating
  9. 15. protects your body from harm, outermost layer of your body
  10. 16. fights invading germs in the blood
  11. 21. It permits movement of the body, maintains posture, and circulates blood throughout the body