Body System

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Across
  1. 4. passes signals from brain to body
  2. 6. muscle
  3. 8. study of living organisms
  4. 13. Digest
  5. 14. rate of heatbeat
  6. 15. give birth
  7. 16. immunity
  8. 18. rate of breathing
  9. 20. building blocks made of fat
Down
  1. 1. bone structure
  2. 2. combine molecules to form proteins
  3. 3. pressure of blood
  4. 5. a theory made based off limited data
  5. 7. intensity of heat or cold
  6. 9. snacks
  7. 10. breathing
  8. 11. rotation of blood
  9. 12. small unit that can live on its own
  10. 17. sugar
  11. 19. tissues that perform a function to live