Body Systems ''

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Across
  1. 2. “u” shaped bone
  2. 4. type of muscle you don't control
  3. 7. can only contract not extend
  4. 11. there are 14 of these bones
  5. 12. inhales and exhales oxygen
  6. 13. type of neurotransmitter
  7. 14. your body has 12 pair of these
  8. 16. smallest muscle in body
  9. 18. lungs fillup with fluid
  10. 19. send message of "ouch"
Down
  1. 1. type of infection that cause damage in nerves
  2. 3. 206 of these in body
  3. 5. airway narrow and too much mucus
  4. 6. carries blood to heart
  5. 8. transports every thing within body
  6. 9. recommended before workout
  7. 10. carries blood away from heart
  8. 12. also known as voice box
  9. 15. this and spinal cord make up central nervous system
  10. 17. keeps circulatory system working