Body Organization

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Across
  1. 3. this systems helps maintain the "saltyness" of the blood and bodily fluids
  2. 4. fights off foreign invaders
  3. 6. the glands of this system often swell if you have an infection
  4. 7. hormones
  5. 9. contains contractile tissue
  6. 10. skin, hair and nails
  7. 12. responsible for gas exchange with the environment
Down
  1. 1. this system makes blood cells
  2. 2. this system is responsible for processing food
  3. 5. includes heart and blood vessels
  4. 8. the neuron is the functional unit of this system
  5. 11. includes the ovaries and testes