Organ System Crossword puzzle

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Across
  1. 7. protects your body from infection and injuries you could get from your external environment
  2. 8. delivers oxygen and nutrients to cells and takes away wastes
  3. 10. Your body's central framework
  4. 11. breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair
Down
  1. 1. predominant function is contractibility,responsible for movement
  2. 2. maintains fluid levels in our body tissues by removing all fluids that leak out of our blood vessels
  3. 3. moves fresh air into your body while removing waste gases
  4. 4. helps all the parts of the body to communicate with each other
  5. 5. produce egg and sperm cells
  6. 6. made up of all the body's different hormones
  7. 9. maintain the volume and composition of body fluids within normal limits