Human Body

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Across
  1. 2. Hormone that makes us happy
  2. 3. Smallest bone in the human body
  3. 4. Smallest cell in the human body
  4. 8. Largest blood vessel in the human body
  5. 9. As well as having unique fingerprints, humans also have unique _______ prints
  6. 10. Longest bone in the human body
Down
  1. 1. Largest cell in the human body
  2. 2. Hiccups are caused by involuntary contractions of the __________
  3. 5. Hardest substance in the human body
  4. 6. Largest organ in the human body
  5. 7. Human body contains 60-70% of _______